Frames available worldwide including North America.


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The Roadrat: Swift and Rugged Flat Bar Flyer. Road, Gravel, Commute, Adventures

The Roadrat fits into your life, for work and play. It was born of a desire for something swift and rugged to take on the rapidly crumbling tarmac of the urban landscape, but also up for disappearing for a few days with nothing but your sleeping bag and mat for company. The Roadrat will take you to work, to the shops, on holiday, to the hills, on adventures, or just to that quiet place where you get some headspace.

All Cotic Life Bikes have big clearances for big tyres. Sure you can speed it up on 700x28c, but we supply the bikes with big volume 37c slicks. They roll really fast, but float over the potholes in the road and bumps in the trail.

The bike is disc brake only, because we have always considered disc brakes to be the best, strongest, safest option for road or offroad riding. Our bolt thru RB3 front fork keeps everything accurate and together with the strongest of hydraulic brakes.

All the fittings for two bottles, rear rack, full mudguards are included, and track end dropouts for regular gears, fixed, singlespeed or hub gear. Why limit yourself and your bike to just one thing?

Faster than a mountain bike on the road, way more fun and versatile than a traditional road bike, the Roadrat is your perfect 'other' bike. A Life Bike. Cruise into work or head for the hills. Grab your Roadrat

Just Gloss Hot Yellow frames left, with a choice of forks colours, for a low low price.


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What's New?

The Roadrat3 now has the larger diameter down tube from the Escapade to improve stiffness under load when you've got your bike singlespeed, or loaded up with luggage.

Also new are a lovely clean disc only layout, and a new RB3 9mm bolt thru axle fork with matching wheelset. This gives great stiffness to the fork, and the additional safety of the closed loop dropout allows us to move the disc mount back to the traditional rear fitment.

Frame & Fork Specifications

Geometry and Sizing Chart

The chart is a guide to frame size for the latest version of the ROADRAT: Ultra Compact Geometry - Roadmeans that the frames are low and long. You'll probably need a 350mm seatpost due to the compact sizing, and as a guide, the top tube lengths are identical to our MTB frames if you're coming over from our mountain bikes. 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.

dimensions in mm

Frame Size Small Medium Large
Seat Tube (centre-top) 48cm 51cm 54cm
Top Tube Length (Effective) 57.7cm 59cm 61cm
Chainstay Length 425mm 425mm 425mm
Head Angle 72 72 72
Seat Angle 73 73 73
BB Drop 60mm 60mm 60mm
Head Tube Length 145mm 155mm 165mm
Usual Height Range up to 175cm 173cm - 180cm 180cm - 191cm
Stem Length 90mm-120mm 90mm-120mm 90mm-120mm
Forks included with frame:
Fork Length 400mm 400mm 400mm
Fork Rake(centre-top) 45mm 45mm 45mm

dimensions in inches

Frame Size Small Medium Large
Seat Tube (centre-top) 18.9" 20.1" 21.3"
Top Tube Length (Effective) 22.7" 23.25" 24.0"
Chainstay Length 16.7" 16.7" 16.7"
Head Angle 72 72 72
Seat Angle 73 73 73
BB Drop 2.3" 2.3" 2.3"
Head Tube Length 5.7" 6.1" 6.5"
Usual Height Range up to 5'9" 5'8" - 5'11" 5'10" and over
Stem Length 3.5"-4.7" 3.5"-4.7" 3.5"-4.7"
Forks included with frame:
Fork Length 15.75" 15.75" 15.75"
Fork Rake(centre-top) 1.75" 1.75" 1.75"

Component Sizes

Seatpost diameter: 27.2mm (wise to get a decent length one)

Seatpost clamp: 29.8mm or 30.0mm (bolt up clamp is included)

Front Mech: 28.6mm (bottom pull)

Bottom Bracket width: 68mm

Bottom Bracket thread: Conventional English/BSA

Headset: 1⅛" only

Front hub: 9mm bolt thru or 9mm QR (note, fork has closed end)

Rear Hub: Normal 135 or 130 x 10 QR

Components we can sell you to help with your build

Complete Headsets Traditional
Cane Creek Headset£45
External cup Bottom Brackets 24mm
BB52 Deore Bottom Bracket£20
MT800 XT Bottom Bracket£25
Hope MTB Stainless Steel (black)£90

(headset and bottom bracket prices include fitting)