How to Choose Mountain Bikes
Cannondale Jekyll 1 Mountain Bike
$3,940.93 – to $4,370.93Save up to 30%
With just the right amount of go-fast tech to get you smiling on the descents and a carbon frame to make the uphills more enjoyable, the Cannondale Jekyll 1 mountain bike is made for big mountain fun.
Key Details
Wheel Size
29 inches
Fork Travel
170 millimeters
Number of Gears
12 gear(s)
- Carbon frame is proportional response tuned with a tapered head tube and Ai offset
- Guidler idler pulley/chainguide
- Fox Float Factory 38 fork with 170 mm of travel
- Float Factory X2 air shock with 205 x 65 Metric Trunnion offers adjustable high- and low-speed compression as well as adjustable high- and low-speed rebound
- SRAM Code RSC hydraulic disc brakes with 220/200 mm CenterLine rotors
- HollowGram SAVE carbon riser bar
- DownLow dropper post
- 1 x 12-speed drivetrain
- 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 |
|---|---|
| Mountain Bike Style | All-mountain |
| Frame | 165 mm travel, carbon, proportional response tuned |
| 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 |
| Crankset | SRAM X1 Eagle B148 CL55, 30T |
| Bottom Bracket | SRAM DUB BSA MTB73 |
| Shifters | 12-speed |
| Rear Derailleur | SRAM GX Lunar Eagle |
| Rear Cogs | SRAM XG-1275, GX Eagle, 10-52T, 12-speed |
| Number of Gears | 12 gear(s) |
| Brake Type | Hydraulic Disc Brake |
| Brakes | SRAM Code RSC hydraulic disc |
| 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 | 2.5 inches 2.4 inches |
| Handlebar Shape | Riser Bar |
| Handlebar | Cannondale 1 Riser, carbon, 30 mm rise, 8 degree sweep, 5 degree rise, 780 mm |
| Stem | FSA Grid 35, 35 mm |
| Seat Post | Cannondale DownLow Dropper w/ Matchmaker lever, 31.6, 125 mm (Small), 150 mm (Medium), 170 mm (Large-XL) |
| Saddle | Fabric Scoop Shallow Elite, hollow chromoly rails |
| Pedals | Not included |
| Headset | Integrated sealed bearing, tapered |
| Chain | 12-speed |
| Dropper Post | Yes |
| Weight | 34 lbs. 1.6 oz. |
| Bike Weight | Bike weight is based on median size, as sold, or the average of two median sizes. |
| Gender | Unisex |
Cannondale Bikes (208175)
| S | M | L | XL | |
|---|---|---|---|---|
| Reach | 42.5 | 45.0 | 47.5 | 51.0 |
| Stack | 62.5 | 63.4 | 64.3 | 65.2 |
| Effective Top Tube | 56.9 | 60.8 | 62.3 | 66.0 |
| Seat Tube Center-Top | 39.0 | 41.0 | 44.5 | 50.0 |
| Standover Height | 75.0 | 75.0 | 76.0 | 77.0 |
| Head Tube Length | 10.0 | 11.0 | 12.0 | 13.0 |
| Head Tube Angle (degrees) | 64.0 | 64.0 | 64.0 | 64.0 |
| 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 | 43.0 | 43.5 | 44.2 | 45.0 |
| 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.
Buying Advice
Review this Product
Adding a review will require a valid email for verification
Jekyll1
PNW
Excellent bike, and great price.
2 years ago
I ride in PNW. My last bike was a Niner RIP 9. My biggest concerns before I bought the bike were how well it will climb. It’s an enduro bike but I didn’t want to carry the bike to top of the mountain. Second concern was the “gravity cavity”; basically how easy would it be to clean the bike and keep the frame clean. I’m extremely happy with the bike. It climbs really well for a 34lb bike. I’d say no worse than my RIP9. Geometry is very well sorted. Secondly, drive train is not noisy at all. Even in the biggest cog. Coming down the mountain is a blast. It’s playful, and quite agile and yet feels planted when you want it to and goes fast! Very confident inspiring. As far as the gravity cavity is concerned. It’s not an issue so far and it’s been easy to clean. This is a great bike and with the clearance sale, it’s better than anything else out there.
Age:35–44
Weight:175–200 lbs.
Height:6'0"
Experience Level:Experienced
Riding Frequency:Multiple times per week
Yes , I recommend this product
rider12
West Waashington
one of the best!
2 years ago
It’s great coming down, as it should be. Not mediocre, but great! The biggest surprise has been how well it climbs for an enduro rig. The chain and high pivot design doesn’t make any extra noise and it’s efficient. I’m not sure about the gravity cavity just yet, but will know in next few weeks. So far it’s been easy to clean
Age:35–44
Weight:175–200 lbs.
Height:6'0"
Experience Level:Experienced
Riding Frequency:Multiple times per week
Yes , I recommend this product