RocketMAX

  • 29 enduro bike
  • 160mm rear travel
  • 170mm fork
Cotic, full-suspension, enduro, droplink, steel, 853, Rocket, MAX, frames, frame, mountain, bike, orange, Reynolds, Ovalform
Cotic, full-suspension, enduro, droplink, steel, 853, Rocket, MAX, frames, frame, mountain, bike, orange, Reynolds, Ovalform

The Cotic RocketMAX is our blisteringly fast and supremely confident steel Enduro bike


Big travel | high speed | all day long

If you want to go as fast as you dare, the RocketMAX is the bike for you. 160mm of rear travel coupled with the latest breed of 170mm enduro fork brings buckets of confidence in the most challenging terrain and committed speeds.

See that high line? RocketMAX is already there. Sketchy chute? Just hold tight. You won't find a more sure-footed bike that you can still turn on a dime and spin back up to the top for more.

The Cotic developed Reynolds 853 tubeset is welded and finished in the UK, and keeps this hooligan of a bike feeling supple and looking sleek. It's a bike that just begs to be ridden; stick it down any trail and you'll come out the other side buzzing, knowing you couldn't have done that any better.

Balanced, versatile and fun on everything from blue trails to EWS stages. RocketMAX



What have we changed and improved for the Gen4 version of the RocketMAX?

Learn what's new...



Demo

Are you in the UK and would like to demo a RocketMAX? Contact us via our Demo Page to organise a demo ride with us.

Book your Peak District demo...


LOVE IT OR YOUR MONEY BACK

Ride any of our products for 30 days and if you're not happy send it back for a full refund.

Find out more about our guarantee...



Your Bike Built For You

We do things differently at Cotic. We assemble every single bike to order, with lots of options to make your Cotic unique to you.

Learn more about YOUR BIKE BUILT FOR YOU...



Reviews


Read Bikeradar's First Ride review of the RocketMAX Gen4 Gold XT/Fox bike:

"Pros: Very smooth riding; massively capable on gnarly terrain; addictive cornering"

"That same progressiveness meant that hammering rough terrain didn’t result in successive harsh bottom-outs. Instead, the RocketMAX exuded a calm and composed character with a bottomless rear end."

"Despite only having a limited amount of time on the RocketMAX Gen4, it was crystal clear that it’s a true enduro racer’s dream, where speed is the primary focus......, the RocketMAX is a massively capable bike most at home on the gnarliest, steepest, roughest and fastest terrain."

Click here to read the full review


Want to learn more about the awesome RocketMAX?

Click on the tabs below...



The new RocketMAX Gen4 continues the evolution of our standard shredding Gen2 RocketMAX, the first RocketMAX to feature Longshot geometry.

New for Gen4, C-Sizing is introduced with 5 sizes instead of 4. This has reduced the reach steps between sizes to just 19mm, and has resulted in shorter seat tubes and more standover for the C2, C3 and C4 sizes when compared to the previous medium and large which spanned a similar size range. C1 is broadly the same as the our proven small size, with C5 increasing the reach slightly over the previous XL to 520mm to account for the steeper seat angle.  The dynamic BB is a little lower for the Gen4, but still with enough clearance that pedal strikes on our local Climb Of Truth are kept to a minimum. The seat angles are adjusted for rider height, with the larger C3, C4 and C5 sizes getting a steepened seat angle. This aims to maintain a seat angle at the saddle of around 76 deg for all riders. This bike may be a shredder on the downs, but you have got to be able to get back up to the top comfortably and effectively, whatever the terrain throws at you.

At the front of the bike, the new (Cotic exclusive - all 853 frames are NOT created equal) Reynolds 853 down tube is increased in strength and stiffness. The geometry is revised to make the most of the latest 38mm stanchion enduro forks with up to 170mm travel. We use steel because we believe the flex characteristics we can dial in along the length of the bike enhance grip and improve performance. It's fantastically durable, repairable and recyclable, and also happens to be the lowest environmental impact material you can build a bike frame out of.

Head angle remains 63.5deg with a 170mm fork. We have tried some other options around this and it is simply the best setting for a bike like this. I had an adjustable prototype which took the reach all the way out to 530mm / 63 head angle, as well as trying 525mm too along with various head angles. 520mm at 63.5 was the sweet spot for the new C5 size. We've done our homework on this! As always with Cotic Longshot geometry, 35mm stems across the board keep the bike more manageable and responsive than you would imagine, with all the upsides in terms of speed and stability you would expect.

Regardless of the detail, in practice this means you're much more likely to find your perfect fit with this new sizing range.

RocketMAX Gen4 retains the 160mm rear travel of the Gen3 bike, but with reduced leverage ratio and revised droplink kinematic making it compatible with both air and coil shocks this time around. The droplink itself is a new design exclusive to the RocketMAX Gen4, which keys the links to the axles to eliminate any twist or flex through the linkage.

Different shock options give different travel options:

  • 65mm stroke for 160mm travel
  • 62.5mm for 155mm travel
  • 60mm stroke for 150mm travel
  • Whilst the bike has been developed quite specifically for the requirements of 170mm travel 38mm stanchion enduro forks and 65mm stroke rear shocks, the shorter stroke shock options combined with a 160mm fork give you an option to build a tough trail bike with great geometry. Allied to the Mullet option carried over from the Gen3, using an angleset to correct the geometry for the smaller rear wheel, and there's a RocketMAX to cover a lot of bases. Have a look at the Geometry Table below for full details.

    The main changes for the Gen4 bike specs are the addition of the Rock Shox Zeb Ultimate and Fox 38 Factory 170mm as fork options, along with the Cane Creek Kitsuma Coil on the shock side for your coil option. Jump to the bike specs here.


Cotic Size Guide
Frame sizeRider Height in centimetresRider Height in feet and inches
C5184cm - 195cm6ft 0in - 6ft 5in
C4182cm - 190cm5ft 11in - 6ft 3in
C3176cm - 184cm5ft 9in - 6ft 0in
C2170cm - 178cm5ft 7in - 5ft 10in
C1162cm - 172cm5ft 4in - 5ft 8in

The chart is a guide to frame size. Longshot Geometry means that the frames are low and long, with plenty of standover room. We recommend going for the size suggested for your height on the chart, and getting all the benefits of running a super short and responsive 35-45mm stem. It's a game changer.

Our new Cotic "C" Sizing tightens the gaps between sizing, and give you more options to size up or down as you wish.

Make sure you consider your leg length as well. If you upsize you might not be able to fit a longer dropper post due to the collar hitting the seat tube top or the dropper post bottoming out on the seat tube droplink pivot. Maximum seatpost insertion for calculating dropper post options is on the chart.

If you'd like to learn more about our mould breaking Longshot Geometry, Click Here

We don't develop our bikes around a specific fork offset, we find that it's simply a preference down to the individual rider. If you'd like to learn more about this, Click Here

If you are unsure about that or anything else, drop us a line at size@cotic.co.uk and we'll be happy to discuss set up based on what you're riding at the moment and what seatpost you are planning to use.


170mm travel forks - dimensions in mm

Frame Size C1 C2 C3 C4 C5
Seat Tube
(centre-top)
390 417 444 471 496
Top Tube Length
(effective)
599 621 639 660 679
Head Angle 63.5° 63.5° 63.5° 63.5° 63.5°
Actual Seat Angle
(at 720 BB-saddle height)
75.8° 75.8° 76.2° 76.2° 76.2°
Actual Seat Angle
(at 815 BB-saddle height)
75.5° 75.5° 75.9° 75.9° 75.9°
Chainstay Length 448 448 448 448 448
BB Drop 23 23 23 23 23
Head Tube Length 100 110 120 130 130
Reach 444 462 482 501 520
Stack 630 639 648 657 657
Wheelbase 1244 1268 1290 1314 1333
Usual Height Range 162-172cm 170-178cm 176-184cm 182-190cm 184-195cm
Stem Length 25-45 25-45 25-45 25-45 25-45
Frame Wheel Travel (65mm stroke shock) 160 160 160 160 160
Frame Wheel Travel (62.5mm stroke shock) 155 155 155 155 155
Frame Wheel Travel (60mm stroke shock) 150 150 150 150 150
Wheel Size 29" 29" 29" 29" 29"
Max Rear Tyre Size 29 x 2.5"    29 x 2.5"    29 x 2.5"    29 x 2.5"    29 x 2.5"   
Maximum Seatpost Insertion
(including actuator mechanism)
164 191 219 246 270
All measurements are static based on 170 travel fork/586 static length. Seatpost Maximum insertion is guidance based on leaving 25 clear below the actuator for any hose or cable to route through our frames. Your post may need less, or more, or if you use an externally routed dropper you won't need this margin at all.

160mm travel forks - dimensions in mm

Frame Size C1 C2 C3 C4 C5
Seat Tube
(centre-top)
390 417 444 471 496
Top Tube Length
(effective)
597 623 641 662 681
Head Angle 64.1° 64.1° 64.1° 64.1° 64.1°
Actual Seat Angle
(at 720 BB-saddle height)
76.4° 76.4° 76.8° 76.8° 76.8°
Actual Seat Angle
(at 815 BB-saddle height)
76.1° 76.1° 76.5° 76.5° 76.5°
Chainstay Length 448 448 448 448 448
BB Drop 28 28 28 28 28
Head Tube Length 100 110 120 130 130
Reach 451 470 489 508 527
Stack 625 634 643 652 652
Wheelbase 1237 1261 1283 1307 1326
Usual Height Range 162-172cm 170-178cm 176-184cm 182-190cm 184-195cm
Stem Length 25-45 25-45 25-45 25-45 25-45
Frame Wheel Travel (65mm stroke shock) 160 160 160 160 160
Frame Wheel Travel (62.5mm stroke shock) 155 155 155 155 155
Frame Wheel Travel (60mm stroke shock) 150 150 150 150 150
Wheel Size 29" 29" 29" 29" 29"
Max Rear Tyre Size 29 x 2.5"    29 x 2.5"    29 x 2.5"    29 x 2.5"    29 x 2.5"   
Maximum Seatpost Insertion
(including actuator mechanism)
164 191 219 246 270
All measurements are static based on 160 travel fork/571 static length. Seatpost Maximum insertion is guidance based on leaving 25 clear below the actuator for any hose or cable to route through our frames. Your post may need less, or more, or if you use an externally routed dropper you won't need this margin at all.

170mm travel forks - dimensions in mm

Frame Size C1 C2 C3 C4 C5
Seat Tube
(centre-top)
390 417 444 471 496
Top Tube Length
(effective)
599 621 639 660 679
Head Angle 63.5° 63.5° 63.5° 63.5° 63.5°
Actual Seat Angle
(at 720 BB-saddle height)
74.8° 74.8° 75.2° 75.2° 75.2°
Actual Seat Angle
(at 815 BB-saddle height)
74.5° 74.5° 74.9° 74.9° 74.9°
Chainstay Length 448 448 448 448 448
BB Drop 32 32 32 32 32
Head Tube Length 100 110 120 130 130
Reach 435 451 473 492 511
Stack 638 647 656 665 665
Wheelbase 1233 1257 1279 1303 1322
Usual Height Range 162-172cm 170-178cm 176-184cm 182-190cm 184-195cm
Stem Length 25-45 25-45 25-45 25-45 25-45
Frame Wheel Travel (65mm stroke shock) 160 160 160 160 160
Frame Wheel Travel (62.5mm stroke shock) 155 155 155 155 155
Frame Wheel Travel (60mm stroke shock) 150 150 150 150 150
Wheel Size 29"F/27.5"R 29"F/27.5"R 29"F/27.5"R 29"F/27.5"R 29"F/27.5"R
Max Rear Tyre Size 27.5 x 2.8" 27.5 x 2.8" 27.5 x 2.8" 27.5 x 2.8" 27.5 x 2.8"
Maximum Seatpost Insertion
(including actuator mechanism)
164 191 219 246 270
All measurements are static based on 170 travel fork/586 static length with 1 deg angleset installed to steepen the head angle. Seatpost Maximum insertion is guidance based on leaving 25 clear below the actuator for any hose or cable to route through our frames. Your post may need less, or more, or if you use an externally routed dropper you won't need this margin at all.

160mm travel forks - dimensions in mm

Frame Size C1 C2 C3 C4 C5
Seat Tube
(centre-top)
390 417 444 471 496
Top Tube Length
(effective)
597 623 641 662 681
Head Angle 64.1° 64.1° 64.1° 64.1° 64.1°
Actual Seat Angle
(at 720 BB-saddle height)
75.4° 75.4° 75.8° 75.8° 75.8°
Actual Seat Angle
(at 815 BB-saddle height)
75.1° 75.1° 75.5° 75.5° 75.5°
Chainstay Length 448 448 448 448 448
BB Drop 37 37 37 37 37
Head Tube Length 100 110 120 130 130
Reach 440 459 478 497 516
Stack 635 644 653 662 662
Wheelbase 1226 1250 1271 1296 1315
Usual Height Range 162-172cm 170-178cm 176-184cm 182-190cm 184-195cm
Stem Length 25-45 25-45 25-45 25-45 25-45
Frame Wheel Travel (65mm stroke shock) 160 160 160 160 160
Frame Wheel Travel (62.5mm stroke shock) 155 155 155 155 155
Frame Wheel Travel (60mm stroke shock) 150 150 150 150 150
Wheel Size 29"F/27.5"R 29"F/27.5"R 29"F/27.5"R 29"F/27.5"R 29"F/27.5"R
Max Rear Tyre Size 27.5 x 2.8" 27.5 x 2.8" 27.5 x 2.8" 27.5 x 2.8" 27.5 x 2.8"
Maximum Seatpost Insertion
(including actuator mechanism)
164 191 219 246 270
All measurements are static based on 160 travel fork/571 static length with 1 deg angleset installed to steepen the head angle. Seatpost Maximum insertion is guidance based on leaving 25 clear below the actuator for any hose or cable to route through our frames. Your post may need less, or more, or if you use an externally routed dropper you won't need this margin at all.

Cotic Longshot Geometry, Longshot geometry, progressive geometry, mountain biking, enduro mountain biking, trail riding, mountain bike, full suspension mountain bike, 29er, 29 inch wheels, 27.5 inch wheels

Radical Longshot geometry keeps the bike stable through the rough stuff, planted in the corners and pinpoint accurate in the steep tech. Couple a super short 35mm stem to the optimised head angle and the bike really pushes you on, looking for every stump to boost off, rock to gap and berm to rail, keeping you connected to the trail while maintaining incredible poise and composure.

Our new Cotic "C" Sizing tightens the gaps between sizing, and give you more options to size up or down as you wish.

Reynolds 853

Reynolds 853 builds a light, lively and fantastically robust front end, and includes our custom ride tuned Ovalform top tube, and new for Gen4 our Cotic designed and exclusive HD down tube, which helps to deliver that famous ride feel. The frames' steel construction is compliant and naturally ground moulding, extracting grip and feedback from the trail where you thought there was none.

If you want to learn more about the RocketMAX UK Made and finished construction, click here to read the Singletrack feature all about it...

MAX

Cotic MAX frames use 29 inch wheels. MAXimum speed, MAXimum rollover.

29inch wheels roll easy and give a lot of stability, confidence and speed in rougher terrain, at the expense of being a little heavier and less playful than regular 27.5" wheels. If you want some of that smaller wheel manoeuvrability, we also offer a mixed wheel size 29 front / 27.5 rear Mullet option.

droplink
Cotic Droplink suspension is supportive and progressive, keeping the 160mm travel RocketMAX feeling lively and interactive, with grip to spare on the descents, support and traction on the climbs.

We Build Your Bike For You

All Cotic bikes are assembled in the UK from and frame up. We have set specifications, but these are just the start. Want the Silver spec bike with tubeless tyres? Easy! Want a 38 instead of Zeb on your RocketMAX? It's there too. Full colour matched Hope parts, and add the matching brakes too? It's a click away, and everything else in between. If it's not a choice on the order form, just ask.

When you contact us you are talking to the people who design the frames and will be building your bike. We check it and build and pack it in our award winning bike boxes with the same care we would our own bike, because we know how important it is. We build your bike, for you.

Click here for the full bike specs...

Order your dream bike today...

Is the RocketMAX the bike for you?

Like your wheels big, but more of an all rounder? A little more responsive and shorter travel? You need the Jeht.

Maybe you're more a hardtail rider, but like the speed and security of the RocketMAX with 29er or 275 Plus wheels? Have a look at the BFeMAX.

Complete bikes from: £3999

Rolling chassis from: £3249

Bikes are now available worldwide, with free shipping to UK, Ireland and mainland Europe.

We have several levels of stock build which are based around our favourite parts in builds you can trust. We never specify anything we haven't ridden, tested and enjoyed. However, just about everything in your build can be customised to help with fit (contact us if you need help) or to personalise your bike. Want a different fork? Shock? Brakes? Wheels? Tyres? Bars? Stem? Longer drop seatpost? Women's saddle? Colour matched Hope components? No problem. It's your bike.

YOUR BIKE BUILT FOR YOU.

All the bikes are assembled from a frame right here in the UK by us. We can do everything from bare frame to complete bike: Send us your favourite saddle and grips to fit. Send us your wheels if you have a nice pair you want to use. There's no point you getting kit you don't want. It's wasteful. That gives you almost limitless options to customise and tune your bike to your needs. If you can't see an option you'd like on the order form, get in touch. We all know it's good to head off piste sometimes!

Tap on a build title below to see the default specification and price for that build... then hit the 'CONFIGURE YOUR BIKE' button to see all the customisations you can make to the build. When you select your country at the bottom of the form, sales taxes (VAT), pricing and shipping will automatically update for you. Once you're happy, order your bike!


Silver SLX 1x12 - MT620 wheels - Lyrik Ultimate
headsetCane Creek Headset 40 Series ZS44/EC44
bottom bracketMT800 XT Bottom Bracket
forkRock Shox Lyrik 29 Ultimate Maxle Boost Black - 160mm
shock155mm travel - Rockshox Deluxe Select Plus 230x62.5
wheelsShimano MT620 Wheels Boost 29 12spd
cassetteSLX 12spd 10-51 Cassette
disc brakePair of Shimano Deore M6100 brakes
disc brakePair of Shimano rotors 203/203 centerlock
groupsetSLX M7100 1x12 Drivetrain
chainsetSLX M7100 Chainset with 32t chainring
finishing kitBlack Lockon grips and saddle
tyresWTB 29 Verdict 2.5 Slashguard and Trail Boss 2.4 Tough with tubeless kit
handlebarCotic Calver Bars - 780 x 25 rise, 5deg up, 9deg back (black)
stemCotic SHORTERSTEM - 35mm
seatpostBikeYoke Devine Seatpost 125mm drop
seat clampHope Bolt Up Seat Clamp (black)
price£3999
CONFIGURE YOUR BIKE
  • Radical Cotic Longshot geometry is specifically designed for super short 35mm stems, giving incredible steering responsiveness combined with hugely confidence inspiring capability at speed.
  • Reynolds 853 Ovalform and Cotic Exclusive HD down tubed front end brings precision, beautiful ride feel, durability and strength
  • 44mm standard head tube designed with external bottom cup for taper steerer compatiblity and zero stack top cup for minimal stack height
  • Custom Cotic designed 35mm Reynolds 853 seat tube for super stiff support for the main suspension pivots
  • 31.6mm seatpost size is dropper seatpost compatible. Internal 'Stealth' dropper post remote routing
  • Integrated 3D printed Cotic chain guide and a regular threaded bottom bracket bring drivetrain security and reliability
  • Rear mech cable routed internally through the steel seatstay for clean lines and low noise
  • Custom forged swingarm heads for stiffness and tyre clearance
  • 6066-T6 aluminium swingarm with Syntace X-12 BOOST148 x 12 rear axle for maximum wheel stiffness on larger wheels.
  • 15mm pivots for main and droplink thru axle style pivots. New keyed linkage axle and clamps increase the torsional stiffness
  • 1 bottle mount
  • Clearance for big tyres - 29 x 2.5"
  • Designed around the latest 38mm stanchion, 170mm forks for great balance of speed and precision.
  • 160mm of Cotic droplink suspension brings traction, fun and interaction via a strong progression rate
  • Sizes - C1, C2, C3, C4, C5


ORDER YOUR FRAME

Cotic frames are designed, developed, engineered and tested entirely by us at our base in the Peak District, near Sheffield in the UK. Our founder - Cy Turner - is the lead designer and engineer, and our frames are rigorously ride tested by everyone at Cotic and chosen test riders and ambassadors. They are fully certified and lab tested in excess of the requirements of ISO4210 safety standards.

For this frame the majority of the production process happens right here in the UK. The skilled guys at Five Land Bikes in Scotland manufacture the Reynolds 853 front triangle in small batches, to their exacting standards. This is married to our proven rear ends from our excellent suppliers in Taiwan, as found across our droplink range. Much of the remaining machined parts are made for us by Unite Components and Bear Frame Supplies.

All the major parts of the frame are dip coated in manganese phosphate to prevent corrosion, before being painted using tough and durable automotive spec paint by the Five Land guys. The graphics on these frames are masked and painted, rather than stick on decals, for a seamless top quality look beyond anything you would normally expect on a production bike. After Five Land Bikes have completed this painstaking hand finishing process and their rigorous QC, the frame parts undergo further checking by us before assembly at our HQ in the Peak District.

As a final added extra, all UK made frames are Datatag'd from the factory. You will receive all your Datatag documents with your frame or bike when it's delivered.

As always, all complete bikes are built to order by us here at Cotic, to the exact spec of your choice. We build your bike for you.

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How To Set Up Your Cotic RocketMAX Gen4

THE BASICS

The suspension on your Cotic droplink bike is designed to work at it’s best when the suspension ‘sags’ with the rider on board the bike. 'Sag' is the amount the shock compresses with a rider on board. The suspension works at its best when set with between 28%-30% of the available travel as sag, with our preferred starting point being 28%.

Your RocketMAX Gen4 runs any of the following shock options:

  • 65mm stroke - 160mm travel - Fox Float X2, Cane Creek Kitsuma Coil or Air, Rock Shox Super Deluxe on Gold and Platinum builds
  • 62.5mm stroke - 155mm - Rockshox Deluxe Select Plus on Silver builds
  • 60mm stroke - 150mm travel - Not currently offered from the factory, but an option if you have a shock of your own

For sag settings this results in:

  • 18-19mm sag on the shock
  • 34-40mm sag on a 170mm fork
  • 32-38mm sag on a 160mm fork

As a starting point we suggest 18mm sag rear, and 38mm sag front (170 fork), 36mm sag front (160mm fork).

IN DETAIL

How To Set Your Shock Sag - Air

Using a shock pump, put 170psi in the rear shock. Leave your forks as they are (if you've already set them up) or put the recommended pressure for your weight in them according to the fork manufacturer's manual.

Check the shock and turn off any lockout or Climb Switch. This allows the shock to compress unhindered and ensures a more accurate sag measurement.

Put your riding kit on. Or at least a fully loaded backpack if you usually ride with one. Make particular note of the amount of water in your pack or your bottles. It's probably the heaviest thing you strap to your bike after yourself, and it makes a difference to the suspension setup.

Set the saddle to your correct full pedalling height.

Mount the bike and go for a quick ride in a suitably quiet area. Whilst riding, bounce on the saddle a couple of times to get the rear shock compressing as much as you can.

Pull in somewhere safe, stop, get off the bike and slide the o-ring on the shock down against the seal. Now get back on the bike and with saddle at full height sit down and let your legs dangle off the pedals and make sure the o-ring on the shock is still up against the seal. Now, gently get off the bike without moving the shock (dropping the saddle and using a kerb or something as step helps).

Once off the bike, measure the distance between the o-ring and the shock body. Adjust the air pressure in the shock accordingly to get the desired amount of sag.

How To Set Your Shock Sag - Coil

Coil shocks may also be used if desired if Cotic state your frame is compatible with one. Always seek advice from Cotic for spring rate. We need your weight in riding kit with any pack and water on board. This can add up to 7kg to your "bathroom scales in the morning" weight, which is significant.

Our bikes are progressive in nature and require stiffer springs than usually suggested by 3rd party suppliers and online spring calculators. If using a spring without the advice of Cotic it will void your warranty. Too soft a spring leads to frame damage.

If using a coil shock, go through the process above, but get someone to measure the eye to eye length of the shock with you on board to estimate the loaded length, then take this away from the unloaded length to get sag. For example:

The rider sits on board and measures 209mm eye to eye length. 230 – 209 = 21mm sag. At this point the rider needs to add some preload to get the desired sag of 19mm.

You must not use more than 2 full turns (2mm) of preload on the spring measured from when you just take up the slack and stop the spring rattling loosely on the shock. If your shock manufacturer recommends less than this, use that guidance. If your shock manufacturer approves more than 2 turns of preload, you must still only use 2 turns of preload. Your Cotic frame warranty is void if you use more than the manufacturer suggested preload, or the 2mm limit specified here, whichever is the smaller. If you need more than 2 turns of preload, you need a stiffer spring anyway. For example, 2mm of preload on a 500lb/in spring is 40lb of preload. At that point you really need the 550lb spring with no preload.

Due to the progression rate on our frames, always ask us what spring rate you need for a coil shock. Never trust an online spring calculator as they don't account for the design of our frame.

How To Set Your Fork Sag

Once you’ve set the rear sag, check the front fork sag. If your bike is brand new, put 60psi in the fork to start with and dial all the compression damping adjuster to minimum. For forks, we recommend running with 20-25% sag.

In a quiet area with minimal traffic, drop the saddle and ride around slowly, giving the forks a bounce once or twice to free them up. Whilst rolling along, sit down and – being careful of the spinning wheel - slide the o-ring on the fork leg down to the seal. Now stand up slowly into a balance position on the bike as if you're about to do a downhill section of trail. Now, without moving the fork any more, move yourself rearward and sit down, and slowly roll to a halt. If you have to use the brake, use it very gently and carefully so that you don't dive the fork under braking and mess up your sag measurement. Gently get off the bike and measure the distance from the o-ring to the fork seal. That is your sag. For a 170mm fork, you should be aiming for around 34-40mm sag (20-25%).

If the fork sag requires alteration, alter it, then check the rear sag again. Keep doing this procedure until both front and rear sag is set as desired by the rider, within the manufacturer recommendations for the frame and fork.

Weight Distribution

It’s worth noting that as the weight distribution of all bikes is different, being dependent on saddle position, stem length and bar width amongst many other things. It’s quite possible that with the correct sag at the rear of the bike, your forks may end up with too much or too little sag because there’s more or less weight on them compared to your previous bike. This is why we don't recommend any particular pressures, because even quite subtle differences in your saddle/cockpit set up compared to anything we measure will result in different pressures being required for a given level of sag. We always recommend setting up using sag measurement as your guide, not a generic shock pressure.

How To Set Damping - Shock

Once the front and rear sags are set, adjust the rebound and compression damping to your preference. If you have specified the Cane Creek Kitsuma Air or Coil or Fox Float X2 shock, then our base setup is on the shock when it's delivered. These settings are listed below all relative to fully open position on the adjusters:

Kitsuma Air

  • 1 x large volume spacer
  • 0.5 Turns HSC (High Speed Compression)
  • 3 Clicks LSC
  • 0.25 Turns HSR
  • 1 clicks LSR

Kitsuma Coil

  • No more than 2 turns preload (see explanation above)
  • 1.0 Turns HSC (High Speed Compression)
  • 5 Clicks LSC
  • 0.5 Turns HSR
  • 2 clicks LSR

Fox Float X2

  • 1 x 0.6" volume spacer
  • 1 Click HSC (High Speed Compression)
  • 4 Clicks LSC
  • 2 Turns HSR
  • 5 clicks LSR

Rockshox Deluxe Select Plus

  • 2 x volume spacers
  • MM tune
  • 3 clicks Rebound

Follow the excellent instructions in the Cane Creek Field Tuning Guide (click here to download) for fine tuning of your Cane Creek shock.

Cotic base settings tend to run on the lively and fast rebound side of things. This might feel quite different to what you were previously used to, but do stick with it for a couple of rides before making changes. Light rebound damping let's the rear wheel 'patter' and maintain traction better. The links to the base tune for your Cane Creek shock can be found above in the Component Sizes tab.

For other shock brands:

Rebound

It is recommended to start with the rebound 3 clicks from fully open. As mentioned above, we believe that the fastest rebound you can run with safely is the best for traction and lively feel. If you feel like you’re being bounced out of the saddle on big compressions, or springing back too hard off drops, or the bike feels like it’s bouncing back at you at high speed on rocky sections, then add more rebound damping until this sensation is eliminated.

Compression / Pedal Platform

It is recommended to start with the compression damping/pedal platform switched off (or set to minimum). The Cotic Droplink suspension is designed not to require the assistance of a compression damping circuit to give good pedalling performance. Using the minimum setting allows the suspension to move under bump forces more easily and track the ground better.

How To Set Damping – Fork

As with the rear shocks, we recommend running the fork damping as light as possible for best traction.

Rebound

Set this in the middle of the range and see how it feels matched up to the rear shock. As with the rear, try riding it faster than you ordinarily would. It's amazing what a difference it makes, and it's key to getting the most out of the fast acting rear shock, because it keeps the bike in balance.

Once you have done a couple of rides, if you feel the in higher speed bumpy trails the fork is kicking back too much for your liking, or too much that you lose confidence, then increase the rebound damping. If you find the middle setting OK, trying making it faster until you get to the point of it feeling sketchy, then go back one click.

Compression

Almost regardless of size, weight or style of riding, everyone at Cotic runs the high speed compression damping on their fork fully open, or very close to it. We recommend you start with fully open and go from there. If you find you are using the full travel a little too easily for your liking, we suggest adding 1 volume reducer to your fork air spring rather than ramping up the damping.

For low speed compression damping, this is a balance between traction and helping keep the fork held up, so for this we recommend starting with it set in the middle of the range. If you are finding that the bike feels confidence inspiring, but it's a little uncomfortable or 'chattery' through your hands, try reducing the low speed compression 3 clicks. If you feel that the sag and air spring feel is what you want but you are getting a lot of diving under heavy braking, or in steep terrain, try adding 3 clicks. Keep refining like that until you are happy with the setup.

A Bit of Advice

One thing to avoid is setting the rebound based on the 'bounce in the street' test. This usually results in setting the rebound too slow for good grip in trail riding conditions, because doing the 'bounce test' with rebound set fast enough for good performance usually feels too fast in this unhelpful scenario. Only start adjusting once you have a feel on the trail.

Try It Out – The Only Way You'll Know Is By Going For A Ride

We recommend starting at 18mm shock sag and going for a couple of rides to see how this feels. This is a good middle ground for tackling the trails with an active, plush feel combined with a low bottom bracket height for confident handling.

If you feel that you’re catching your pedals too often, or the steering isn’t as fast as you’d like, or you're not getting the climbing position you want, then add more air to the shock and reduce the sag 1 or 2mm, or maybe drop the sag on your fork a few extra millimetres to move your weight forward.

It's well worth taking a couple of hours and doing laps of a trail you know well, and making changes one at a time. A good way to learn it to turn one damping dial fully closed, do a run, then go again with it fully open. You will learn what these big changes to damping do to the bike, which will help you make more subtle changes afterwards.

Take Some Notes Before Tweaking

With all the adjustments available on modern suspension it’s quite possible to get lost chasing a set up and ending up with a bike that doesn’t handle too well. So, if you’ve twiddled and tweaked and the handling just seems to be getting worse, go back to your base setup.

Don’t be afraid to experiment with your suspension settings and general bike setup (stem length, bar height, etc), but always have a base set up written down that you can go back to. This should include a fork travel (if the fork is adjustable) with air pressures for front suspension units. Note down how many clicks of rebound you're running. Same goes for compression damping if its adjustable on your fork.

As your experience grows, you’ll begin to know what certain adjustments do and how to undo them, but it’s a learning curve so keep your head and don’t be afraid to start from scratch.

We really think you could get more out of your bike by playing around with things a little. We're always happy to help if you want advice. Just drop us a line at info@cotic.co.uk

Our service doesn't stop when you order a frame. We want to help you enjoy your new bike to its full potential.

Seatpost diameter: 31.6mm (get 380mm long minimum)

Front Mech: Not applicable - 1x drivetrains only.

Fork: Maximum 170mm travel, 586mm axle-crown (without sag)

Bottom Bracket width: 73mm

Bottom Bracket thread: Conventional English/BSA

Chainline: 52mm Shimano / 53mm Boost chainline for up to 32t round/30t oval chainring, 55mm Shimano chainline for up to 36t round/34t oval chainring

Chainguide Mounting: ISCG05 bottom 2 tabs. Integrated Cotic Top Guide (included with frame or bike)

Headset: 44mm for Taper Steerer forks: Hope 2H, Cane Creek ZS44 Top/EC44 Bottom, Chris King Inset I7

Rear Hub: Boost148 x 12 bolt through

Rear Axle: Syntace X-12

Rear Mech Hanger: Syntace X-12 Type 1 (Conventional or Shimano Direct Mount)

Shock: 230 x 65 (160mm travel), 230 x 62.5 (155mm), 230 x 60 (150mm) Air or Coil shock compatible

Shock Fittings: 20.0 x M8 Down Tube End, 24.0 x M8 Seatstay End

Dropper Post Routing: Stealth via the down tube

Rear Brake Mounting: I.S. Compatible with up to 203mm diameter rotors