Quick, nimble precise on climbs, descents and everything between, the Cannondale Jekyll Carbon 1 29 bike features Gemini adjustable rear travel that's perfect for enduro races and all-mountain epics.
- Fox Float Factory 36 fork provides 150 mm of bump- and hit-absorbing travel; adjustable rear suspension controlled by a Float Factory DPX2 EVOL Gemini shock
- Codeveloped with Fox, the Gemini system provides 2 ride modes: Hustle (short travel) and Flow (long travel)
- Hustle shortens travel to 120 mm and ramps up spring rate for a snappy, responsive feel; Flow delivers a full 150 mm of travel when things get rough
- BallisTec carbon front triangle and SmartForm C1 alloy swingarm provide an excellent balance between weight savings and durability
- 1 x 12-speed drivetrain with Shimano XTR Shadow Plus rear derailleur and HollowGram cranks delivers trail-worthy performance and a wide range of gears
- Shimano XTR Trail hydraulic disc brakes provide the reliable braking performance you need to ride hard and descend with confidence
- Cannondale C1 Carbon riser handlebar and Fox Factory Transfer dropper post put you in control and let you drop your saddle for fully focused descending
- Pedals not included
- Closeout
- NOTE: Specs and images are subject to change based on component availability
Imported.
- 1 year of free adjustments (see more below)
- In-store bike assembly
- Pickup in store or curbside
- Bike experts available at 170+ bike shops
- 20% off shop services
- Free tubes with purchase of flat tire repair (Co-op Cycles brand tubes only; tube must be installed at time of purchase)
New bikes go through a normal break-in period, after which they should be readjusted. All bicycles sold at REI include free adjustments for one year after purchase date—as many times as you need. Included: derailleur and brake adjustments, lateral wheel truing, hub and headset bearing adjustments, tire inflation and chain lubrication. Not included: replacement or installation of new components or accessories, any other services. Call your local REI Co-op Bike Shop for more information.
| Best Use | Mountain Biking |
|---|---|
| Frame | BallisTec Carbon front triangle, SmartForm C1 Alloy swingarm, 150 mm travel max, Ai offset drivetrain, ISCG05 |
| Mountain Bike Style | Trail |
| Bike Suspension | Full Suspension |
| Fork | Fox Float Factory 36, 150 mm, Grip2 Damper, Kashima coating, 44 mm offset |
| Fork Travel | 150 millimeters |
| Rear Shock | Fox Float Factory DPX2 EVOL w/ Gemini dual mode air spring system (Flow Mode - 150mm / Hustle Mode - 120mm, Remote Activated), Kashima coating, 3-Pos adj. |
| Crankset | HollowGram, BB30 w/ X-Sync® SpideRing, 30T, Ai offset |
| Bottom Bracket | Cannondale Alloy PressFit30 |
| Shifters | 12-speed |
| Rear Derailleur | Shimano XTR, Shadow Plus |
| Rear Cogs | 10-51T, 12-speed |
| Number of Gears | 12 gear(s) |
| Brake Type | Hydraulic Disc Brake |
| Brakes | 4-piston hydro disc, 203/180 mm MT900 rotors |
| Brake Levers | Shimano XTR Trail hydro disc |
| Rims | Stan's NoTubes Flow MK3, 32 h, tubeless ready |
| Front Hub | DT 350 15 x 110 mm thru axle |
| Rear Hub | DT 350 12 x 148 mm thru axle, Shimano Micro Spline freehub |
| Wheel Size | 29 inches |
| Tires | Maxxis Assegai, 29 x 2.5 in., 3C Compound, Max EXO puncture protection, tubeless ready |
| Tire Width | 2.5 inches |
| Handlebar Shape | Riser Bar |
| Handlebar | Cannondale 1 Riser, carbon, 15 mm rise, 9 deg. sweep, 4 deg. rise, 780 mm |
| Stem | Cannondale 1, 3D-forged 6061 alloy, 1-1/8 in., 31.8 mm, 0 deg. |
| Seat Post | Fox Factory Transfer Dropper, internal routing, 31.6 mm, 100 mm (S), 150 mm (M-XL) |
| Dropper Post | Yes |
| Saddle | Fabric Scoop Shallow Elite, chromoly rails |
| Pedals | Not included |
| Headset | 1-1/8 to 1-1/2 in. tapered, sealed angular contact bearings |
| Chain | 12-speed |
| Weight | 30.9 pounds |
| Bike Weight | Bike weight is based on median size, as sold, or the average of two median sizes. |
| Gender | Unisex |
| S | M | L | XL | |
|---|---|---|---|---|
| Height Range | 5'2" - 5'5" | 5'6" - 5'9" | 5'8" - 6'0" | 6'1" - 6'5" |
| Reach | 41.9 | 44 | 46.2 | 48.7 |
| Stack | 59.8 | 61 | 62.1 | 63.3 |
| Effective Top Tube | 58.6 | 61.1 | 63.6 | 66.4 |
| Seat Tube Center-Top | 40 | 43 | 46 | 52.0 |
| Standover Height | 76 | 76.6 | 77.6 | 78.8 |
| Head Tube Length | 10.2 | 11.5 | 12.7 | 14 |
| Head Tube Angle (degrees) | 65 | 65 | 65 | 65 |
| Seat Tube Angle (degrees) | 75 | 75 | 75 | 75 |
| Bottom Bracket Height | 36 | 36 | 36 | 36 |
| Wheelbase | 117.9 | 120.7 | 123.4 | 126.4 |
| Chainstay | 44.2 | 44.2 | 44.2 | 44.2 |
| Fork Offset | 4.2 | 4.2 | 4.2 | 4.2 |
Sizing Notes
Measurements are stated in centimeters unless otherwise indicated.
How we measure bikes
- Standover Height Standover Height is a measurement from the ground to the top of the top tube, measured at the midpoint of the top tube.
- Reach Reach is the horizontal distance from the center of the cranks to the center of the head tube, measured at head tube level.
- Stack Stack is the vertical distance from the center of the cranks to the center of the head tube, measured to the top of the head tube.
- Effective Top Tube Effective top tube is the distance from the center of the head tube to the center of the seat tube/seat post, measured parallel to the ground.
- Seat Tube Center to Top Seat Tube length is the measurement of the seat tube, from the center of the cranks to the top of the seat tube.
- Head Tube Length Head Tube Length is measured from the bottom to the top of the head tube.
- Head Tube Angle Head Tube Angle is the acute angle between the head tube and the ground (measured towards the rear of the bike)
- Seat Tube Angle Seat Tube Angle is the acute angle between the seat tube and the ground (measured towards the rear of the bike).
- Bottom Bracket Height Bottom Bracket Height is a measurement taken vertically from the ground up to the center of the cranks.
- Wheelbase Wheelbase is the measurement from the center of the front axle to the center of the rear axle.
- Chainstay Length Chainstay Length is the measurement from the center of the cranks to the center of the rear axle.
- Fork Offset Fork Offset, or rake, is the distance from the front axle to a line drawn parallel to the center of the head tube or steering axis.