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2017 Cannondale

Jekyll Carbon 1

A 27.5″ carbon frame full suspension crosscountry bike with ultra high-end components.
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FrameCarbon
SuspensionFull, 95 / 160mm
ForkCarbon
ShockFox
Wheels27.5″ Aluminum
Drivetrain1 × 11
GroupsetXX1, X01
BrakesSRAM Guide RSC Hydraulic Disc
SeatpostDropper
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Insights
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

25 mph

Jekyll Carbon 1

27 mph

Similar Bikes

Highest gear

(descending)

Reviews

Summary

The Cannondale Jekyll is a highly versatile cross-country bike praised for its innovative Gemini shock system, offering adjustable travel modes for varied terrain. Its geometry and handling are optimized for both climbing and descending, making it a favorite among riders seeking performance and comfort. While some note its weight and suspension tuning as minor drawbacks, the Jekyll's overall ride quality and technology stand out.

Pros
  • Gemini shock system with adjustable travel modes

  • Optimized geometry for both climbing and descending

  • Lightweight and stiff frame construction

  • Excellent traction and control on varied terrain

  • Innovative Asymmetric Integration drivetrain

Cons
  • Slightly heavier than some competitors

  • Limited DIY tuning potential for suspension

  • Proprietary components may require specialized maintenance

Key Quotes
“The Gemini’s ability to reduce travel on the fly, without diminishing its sensitivity to bumps, is a huge advantage,”
Bicycling
Drop your heels, let go of the brakes and the way it seems to melt serious drops into nothing is truly phenomenal
BikeRadar logoBikeRadar
The Jekyll is one of the fastest and least tiring bikes of this travel that we’ve ever ridden
Dirt Mountainbike logoDirt Mountainbike

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BIKE Magazine
Tested: Cannondale Jekyll 29 3

Sep 2018

The 29-inch Jekyll promised to offer the support and stability we wanted more of in its small-wheeled sibling. And it did, but in a decidedly conservative, trail-oriented package.

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MTBR
Cannondale Jekyll 2 review

Dec 2017 · Francis Cebedo

Cannondale has always appealed to a niche audience thanks to use of unique technology. On this bike though, they've delivered exactly what enduro-minded riders want. - Mtbr.com

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Bikerumor
Review: The 2018 Cannondale Jekyll switches from a well-mannered climber to a downhill bruiser

Aug 2017 · Steve Fisher

As the name suggests, the Cannondale Jekyll has two distinct personalities. Most of that is the result of the Gemini-equipped Fox rear shock which adjusts its travel from 130-165mm and changes its spring rate with the press of a button. In climb mode the bike’s rear end rides high, leaning you into a solid position …

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Bicycling
Cannondale’s Jekyll and Trigger Get Upgrades for Advanced Radness

Apr 2017 · Molly Hurford

Cannondale's enduro and all-mounatin bikes have gotten a geometry and technology makeover

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Canadian Cycling Magazine
Cannondale debuts latest iterations of Jekyll and Trigger

Apr 2017 · Canadian Cycling Magazine

Cannondale's enduro-oriented Jekyll and all-mountain Trigger get revamped for model year 2018

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Mountain Bike Action
CANNONDALE JEKYLL CARBON 2

Jul 2016 · McCoy

The Jekyll has a range of personalities on the trail

Read Review

NSMB
Cannondale Jekyll 2 Reviewed

May 2016

After three forks (including a Lefty) and loops of all descriptions – Andrew Major is ready to pronounce a verdict on the Jekyll 2…

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Flow Mountain Bike
Flow's First Bite: Cannondale Jekyll Carbon 2

Jan 2016

On review we have the Jekyll Carbon 2, a bike that is so enduro from every angle. We recently reviewed the all-new Cannondale Habit SE, the short travel trail ripper and we LOVED it. – Habit SE review. Cannondale’s director of suspension technology, Jeremiah Boobar was in town recently and we grabbed him for a …

Highs
  • RockShox Pike.

Lows
  • Nothing to report yet.

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Geometry
Specs
Build
Frame

Jekyll 27.5(650b), 160/95mm, BallisTec Hi-MOD Carbon, BB30, ISCG03, 1.5 Si headtube

BB StandardBB30, Press Fit

Fork

SuperMax Carbon 2.0, 160mm, PBR Isolated Damper Technology with Enduro+ tune and updated controls, 50mm offset

Travel160mm

Shock

Fox DYAD RT2, Dual Travel/Dual Geometry 160/95mm adj. travel

Travel95mm

Bottom Bracket

Cannondale BB30

Headset

Cannondale HeadShok Si

Stem

FSA Gravity Light, 1.5", 31.8, 5 deg.

Handlebar

Cannondale C1 riser, carbon, 4 degree upsweep, 9 degree backsweep, 780x15mm

Saddle

WTB Silverado Team , CroMo

Seatpost

RockShox Reverb Stealth dropper, 31.6, 125mm (S,M) 150mm (L,X) travel

TypeDropper

Pedals

N/A

Grips

Cannondale Dual Locking Grips

Groupset
Rear Derailleur

SRAM XX1

Front Derailleur

N/A

Crank

Cannondale HollowGram Si, hollow forged, BB30, 30t SpideRing

Shifters

SRAM X01, 11-speed

Cassette

SRAM XG-1180, 10-42, 11-speed

Chain

SRAM PCX1, 11-speed

Brakes

SRAM Guide RSC w/ metallic pads, Centerline rotors 180/180mm

TypeSRAM Guide RSC Hydraulic Disc

Brake Levers

SRAM Guide RSC w/ contact point adjust, cartridge bearing, reach adjust

Wheels
Rims

Mavic CrossMax XL PRO LTD Wheel Tire System 27.5"

Spokes

CrossMax XL, Zicral alloy

Front Hub

CrossMax XL, Lefty 60 front, 142x12mm rear

Rear Hub

CrossMax XL, Lefty 60 front, 142x12mm rear

Tires

Mavic CrossMax Charge SSC 2.4"/ Quest SSC 2.35" 27.5"WTS

Rider Notes
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First added January 28

Last updated January 28

Not listed for 3,417 days