Cannondale Jekyll 1

Cannondale Jekyll 1 - It’s a hell of a climber but come on. Jekyll was born for the downs.

Every part of it crafted for the sweet embrace of speed, every element designed to help you wring a bit more of velocity’s nectar from those steep, chunky, high pucker lines you love.

See you at the bottom
Even though Jekyll boasts a unique combo of go-fast tech that’s never been seen before, it's not a bike that talks. It’s a bike that goes.

Where it thrives
Steep, fast, rowdy mountains

What it's built for
Enduro racing, bike park sessions, high-speed mobbing

Best. Suspension. Ever.
4-bar meets high pivot meets idler pulley meets size-specific kinematics. For real. If you’re not up for suspension buzzword bingo, just know that it grips, floats, and pedals like nothing else. It’s always up for getting down. High main pivot gives it a bump-swallowing rearward axle path. The Guidler pulley kills the pedal kickback of high pivot systems. The 4-bar linkage keeps braking smooth, traction high and pedaling crisp.

The Gravity Cavity
The shock tucks cleanly into the twin spar downtube, keeping the bike's center of gravity as low as possible. Wicked stability, instant line changes and one-of-a-kind looks.

Built for You
Well, not you specifically. But someone just like you. With Cannondale's Proportional Response design, everything - from the suspension layout to the geometry, even the length of the chainstays - is completely customized by size, for performance built just for you.

Guidler
Idler pulley + chainguide = Guidler. Clever, right? Idler eliminates feedback from the high pivot swingarm, keeping your pedal stroke smooth, even when the terrain isn't. The guide, well, it guides.

Proportional Response Geometry
Long, slack and low – and fully size-specific. As the front of the bike gets longer with each size, the chain stay length increases proportionally, keeping the rider centered between the wheels for true “made for you” handling.

Guardhouse
Downtube protector keeps your frame safe from roost and strikes, while letting water and debris pass through.

The Ai Advantage
Cannondale Ai Offset Drivetrain delivers more tire and mud clearance in the swingarm, and more even spoke angles for a stiffer, stronger rear wheel.

Features

• Fox Float Factory 38, 170mm.
• Float Factory X2 Shock.
• SRAM GX Eagle 12-speed drivetrain.
• Code RSC hydraulic disc brakes.
• HollowGram SAVE carbon riser bar.
• DownLow dropper post.

Technical specifications

Frameset
Frame: 165mm travel, Carbon, Proportional Response Tuned, Guidler idler pulley/chainguide, BSA 73, ISCG05, tapered head tube, Ai Offset.
Fork: Fox Float Factory 38, 170mm, 15x110mm thru-axle, tapered steerer, 44mm offset.
Headset: Integrated Sealed Bearing, Tapered.
Rear Shock: Fox Float Factory X2, 205x65 Metric Trunnion, Air, Adjustable High Speed/Low Speed Compression, High Speed/Low Speed Rebound.

Drivetrain
Rear Derailleur: SRAM GX Lunar Eagle.
Shifters: SRAM GX Eagle, 12-speed.
Chain: SRAM NX Eagle, 12-speed.
Crank: SRAM X1 Eagle B148 CL55, 30T.
Rear Cogs: SRAM XG-1275, GX Eagle, 10-52, 12-speed.
Bottom Bracket: SRAM DUB BSA MTB73.

Brakes
Brakes: SRAM Code RSC hydraulic disc, 220/200mm CenterLine rotors.
Brake Levers: SRAM Code RSC hydraulic disc.

Wheels
Rims: WTB KOM Trail i30 TCS, 32h, tubeless ready.
Spokes: DT Swiss Factory J -Bend.
Tires: (F) Maxxis Assegai, 29x2.5", 3C compound, EXO+ puncture protection, tubeless ready, (R) Maxxis Minion DHR II, 29x2.4", EXO+, tubeless ready.
Tire Size: 2.5.
Wheel Size: 29.
Hubs: (F) Formula, 15x110mm thru-axle / (R) SRAM MTH 700, 12x148mm, XD Driver.
Front Tire: Maxxis Assegai, 29x2.5", 3C compound, EXO+ puncture protection, tubeless ready.
Rear Tire: Maxxis Minion DHR II, 29x2.4", EXO+, tubeless ready.

Components
Handlebar: Cannondale 1 Riser, Carbon, 30mm rise, 8° sweep, 5° rise, 780mm.
Stem: FSA Grid 35, 35mm.
Grips: Cannondale TrailShroom.
Saddle: Fabric Scoop Shallow Elite, hollow cro-mo rails.
Seatpost: Cannondale DownLow Dropper w/ Matchmaker lever, 31.6, 125mm (S), 150mm (M), 170mm (L-XL).

Please note that, based on component availability and other factors, specifications are subject to change without notice.