Rocket rolling chassis

Rocket complete bike

> Rocket Frame

Price: £1350 with Fox Float Evo CTD shock.

Price for other territories available on request. Available worldwide including North America.

1st Batch of UK Made Rocket Frames Available to Pre-Order - Delivery June 2014.



To sign up for our Email Newsletters, and be kept up to date on the Rocket, enter your email address here:

The Cotic Rocket is our 150mm travel full suspension frame.

The UK Made Rocket is a full suspension bike which really brings together the grace, durability, clean lines, fun, interactive feel and attention to detail we put into all our hardtail frames and added a whole truckload of speed and rock pounding performance. It's an Enduro race weapon which the Cotic Steel City Media Racing team took to multiple UK Gravity Enduro podiums in 2013.

We use steel where we can in the frame because we believe that it's an amazing material to deliver the durability, strength and feel we look for in all our products.

On the Rocket, Reynolds 853 delivers a fantastically robust front end with incredible stiffness at the seat tube and suspension pivots to give you the confidence you need when pushing on. The details are all covered, with ISCG05 mounts, taper steerer compatible head tube, 142 x 12 bolt thru back end, sealed, capped and shielded pivots, right down the precisely located hose routing.

We have 2 shock options available, with a base price of just 1,350

We also offer a "no shock" option for just 1,099.

See the News Archive below, it all tells the story of the Rocket; its inception, the development process, why we arrived here. Take a few minutes to get to know your new bike...



Geometry and Sizing Chart

The chart is a guide to frame size. Ultra Compact Geometry means that the frames are small and long. You can take this two ways. You can either have a regular position coupled with a small and chuckable frame, or you could go for the next size up and go long and racey without feeling like you're riding a gate. You lot are just too different to say for sure, so drop us a line at and we'll be happy to discuss set up based on what you're riding at the moment.

Frame Size Small Medium Large
Seat Tube (centre-top) 16" 400mm 17.5" 445mm 19.3" 490mm
Top Tube Length (Effective) 22.6" 576mm 23.4" 593mm 24.1" 610mm
Head Angle 66.5 66.5 66.5
Seat Angle 73 73 73
Chainstay Length 428mm 428mm 428mm
BB Drop +8mm +8mm +8mm
Head Tube Length 100mm 105mm 120mm
Reach 403.5mm 419.1mm 431.8mm
Stack 564.3mm 568.9mm 582.9mm
Usual Height Range 5'5" - 5'8" 5'9" - 6'0" 6'0" - 6'3"
Stem Length 40-70mm 50-80mm 50-80mm
Frame Wheel Travel 150mm 150mm 150mm
All measurements are static based on 150mm travel fork. 160mm suspension forks will slacken angles by 0.8 degrees. 140mm forks will steepen angles by 0.5 degrees.

Component Sizes

Seatpost diameter: 31.6mm (wise to get a decent length one)

Front Mech: 34.9mm (Top Pull)

Bottom Bracket width: 73mm

Headset: 44mm cup [click here for help]

Shock: 200 x 57

Components we can sell you to help with your build

Complete Headsets 44mm Headtube
Hope 2H for tapered steerer£75
Hope 2H for tapered steerer + adaptor for 1 1/8£85
Nukeproof 44IESS for 1 1/8 steerer£39
Chainstay Mounted Chainguides
Bionicon black chainguide£35
External cup Bottom Brackets
Hope Stainless Steel£75

(headset and bottom bracket prices include fitting)


17/01/2014: Cotic announce Rocket Frame Production transfers to the UK

With the announcement of our sister company Bicycle Manufacturing, an exciting new chapter for Cotic and the Rocket is opened as from now on, all Rockets will be built in the UK at the Bicycle Manufacturing factory in Penistone, South Yorkshire. The latest 2014 design frames will be available in mid-March 2014.

Read all about it on the news page.

15/07/2013: A new video...

The Cotic Steel City Media lads show us their bikes, and kick up some dust...

Josh Lewis on the twitter...

Chay Granby on twitter...

Obviously, so are we...

Plus enduro team co-sponsors, SteelCityMedia...

17/01/2012 : Why steel? - Final Rocket Essay

Cy wrote his final piece on the new Rocket in our newsletter last week. Here it is in our Geek page. There's a fair bit to it, so make yourself a cup of coffee and grab a few mins to sit down and have a read.

Cy's Why Steel? Essay...

09/01/2012 : Rocket Pricing

We have confirmed pricing on the Rocket. We are running with four shock options which should cover the bases for most people. As usual, price includes a Hope seat clamp, chainstay protector, bottle boss bolts, hose clips and delivery.

1,350 - Fox Float RL

1,400 - Marzocchi Roco Air LO

1,475 - Fox RP23 Kashima

1,580 - BOS Vip'r Custom Tune

At the moment we don't have a coil option, but if demand is there we can get pricing on BOS Stoy, Marzocchi Roco and Fox DHX should you so wish. Drop me a line if you want to talk it over.

We'll be offering the Hope headset (2H) which is compatible with the 44mm head tube on the frame. Price when buying from us here at Cotic is 65 fitted, plus 10 for the 1.5 to 1 1/8" crown race adaptor if you need to run a straight steerer fork.

19/12/2011 : Introducing droplink

The latest newsletter was sent on Friday (sign up here) with a lot of information about droplink, our new suspension platform. For those you not signed up to the mailing list, we've put the information on our Geek section for your reading pleasure. We're warning you, it contains the words anti-squat and rate curve more than once!


Read all about droplink...

09/12/2011 : Cotic Rocket - 2nd Installment

For the second installment of the information on the Cotic Rocket, Cy's done a video explaining about the origins of the project, and what he sees as the key points on the bike. We hope you like it.

Here's the overall specification for the bike:

  • 150mm rear travel, using Cotic Droplink suspension (more detail on this in the next newsletter).
  • Slack, low geometry: 66.5 degree head angle/13.3" BB height with 150mm Fox Float installed.
  • Designed for use with 140, 150 and 160mm forks.
  • Front triangle constructed from Reynolds 853, swingarm 7005-T6 aluminium, seatstay/shock strut in cromoly, droplink is 1 piece CNC'd 7075-T6.
  • 7.6lb frame weight including Fox RP23 shock.
  • 44mm standard head tube, designed around zero stack top/external cup bottom for taper steerer compatibility.
  • 31.6mm seatpost size for dropper seatpost compatibility, and hose clips for remotes under the top tube.
  • ISCG05 mounts.
  • Syntace X-12 142 x 12mm rear through axle.
  • Loads of tyre clearance. Easily runs with Maxxis 2.5" DH tyres in the rear end.
  • Regular 73mm threaded BB shell.
  • 15mm pivot axles on both main pivot and Droplink pivots combine with massively stiff 35mm steel seat tube to lock the back end to the front triangle for maximum handling precision.
  • Shock options will include Fox Float RL, Fox RP23 Kashima, and custom tuned BOS Vip'r.

25/11/2011 : The New Cotic Full Suspension Frame

For the last 2 and a half years we have been working on a new full suspension frame. It's finally finished and going into production, so we wanted to announce that we're back in the game and they're due in mid-March 2012.

The frame is called the Cotic Rocket. It's a trail bike with 150mm rear travel for 140-160mm forks. We have so much to tell you about, but Cy's going to do that in detail over the next few weeks in (relatively) easily digested chunks via the mailing list.

It has been a long project, and we're incredibly proud of this bike.

Stay tuned!