How to Choose Mountain Bikes
Cannondale Jekyll Carbon 1 Bike
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Descend into greatness with the Cannondale Jekyll Carbon 1 bike. Sure, it can climb, but it was born for the downs with its go-fast tech that's perfect for enduro races and bike park sessions.
Shop similar productsKey Details
Wheel Size
29 inches
Fork Travel
170 millimeters
Number of Gears
12 gear(s)
- High main pivot gives the bike a bump-swallowing rearward axle path; 4-bar linkage keeps braking smooth, traction high and pedaling crisp
- Rear shock tucks cleanly into the twin spar down tube, keeping the bike's center of gravity as low as possible for great stability and creating one-of-a-kind looks
- Guidler pulley combines an idler pulley and chain guide; idler eliminates feedback from the high pivot swingarm, keeping your pedal stroke smooth
- Proportional Response suspension design tailors the actual suspension layout by size so that riders of all sizes get optimal traction, suppleness and control
- As the front of the bike gets longer with each size, the chainstay length increases proportionally, keeping the rider centered between the wheels
- DownLow dropper post gets your saddle out of the way on the descents
- Down tube protector protects your frame from roost and strikes, while letting water and debris pass through
- Ai offset drivetrain delivers more tire and mud clearance in the swingarm, and even more spoke angles for a stiffer, stronger rear wheel
- Pedals not included
- NOTE: Specs and images are subject to change based on component availability
Imported.
This bike comes with Coast to Coast Support, which includes:
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.
View the Cannondale Jekyll Product LineView all Cannondale Full-Suspension Mountain Bikes- 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 | 165 mm travel, carbon, Proportional Response Tuned, Guidler idler pulley/chain guide, BSA 73, ISCG05, tapered head tube, Ai Offset |
| Mountain Bike Style | All-mountain |
| Bike Suspension | Full Suspension |
| Fork | Fox Float Factory 38, 170 mm, 15 x 110 mm thru axle, tapered steerer, 44 mm offset |
| Fork Travel | 170 millimeters |
| Rear Shock | Fox Float Factory X2, 205 x 65 Metric Trunnion, Air, adjustable high-speed/low-speed compression, high-speed/low-speed rebound |
| Crankset | SRAM X1 Eagle B148 CL55, 30T |
| Bottom Bracket | SRAM DUB BSA MTB73 |
| Shifters | 12-speed |
| Rear Derailleur | SRAM XO1 Eagle |
| Rear Cogs | SRAM XG-1275, GX Eagle, 10-52, 12-speed |
| Number of Gears | 12 gear(s) |
| Brake Type | Hydraulic Disc Brake |
| Brakes | SRAM Code RSC hydraulic disc, 220/200 mm CenterLine rotors |
| Brake Levers | SRAM Code RSC hydraulic disc |
| Rims | WTB KOM Trail i30 TCS, 32h, tubeless ready |
| Front Hub | Formula, 15 x 110 mm thru axle |
| Rear Hub | SRAM MTH 700, 12 x 148 mm, XD Driver |
| Wheel Size | 29 inches |
| Tires | Front: Maxxis Assegai, 29 x 2.5 in., 3C compound, EXO+ puncture protection, tubeless ready; rear: Maxxis Minion DHR II, 29 x 2.4 in., EXO+, tubeless ready |
| Tire Width | Front: 2.5 inches; rear: 2.4 inches |
| Handlebar Shape | Riser Bar |
| Handlebar | Cannondale 1 Riser, Carbon, 30 mm rise, 8 deg. sweep, 5 deg. rise, 780 mm |
| Stem | FSA Grid 35, 35 mm |
| Seat Post | Cannondale DownLow Dropper w/ Matchmaker lever, 31.6, 125 mm (S), 150 mm (M), 170 mm (L-XL) |
| Dropper Post | Yes |
| Saddle | Fabric Scoop Shallow Elite, hollow chromoly rails |
| Pedals | Not included |
| Headset | Integrated Sealed Bearing, Tapered |
| Chain | 12-speed |
| Weight | Unavailable |
| Gender | Unisex |
Cannondale Bikes (198906)
| S | M | L | XL | |
|---|---|---|---|---|
| Height Range | 5'2" - 5'5" | 5'4" - 5'9" | 5'8" - 6'0" | 5'11" - 6'5" |
| Reach | 42.5 | 45 | 47.5 | 51 |
| Stack | 62.5 | 63.4 | 64.3 | 65.2 |
| Effective Top Tube | 56.9 | 60.8 | 62.3 | 66 |
| Seat Tube Center-Top | 39 | 41 | 44.5 | 50 |
| Standover Height | 75 | 75 | 76 | 77 |
| Head Tube Length | 10 | 11 | 12 | 13 |
| Head Tube Angle (degrees) | 64 | 64 | 64 | 64 |
| Seat Tube Angle (degrees) | 77.5 | 77.5 | 77.5 | 77.5 |
| Bottom Bracket Height | 34.8 | 34.8 | 34.8 | 34.8 |
| Wheelbase | 119.3 | 122.7 | 126.4 | 131.1 |
| Chainstay | 43 | 43.5 | 44.2 | 45 |
| Fork Offset | 4.4 | 4.4 | 4.4 | 4.4 |
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.
