Bikes up to 60% offWe monitor over 40,000 bikes daily to find the best prices

Today’s Deals

2017 Cannondale

Jekyll 4

A 27.5″ aluminum frame full suspension enduro bike with upper mid-range components.
Compare the full range

Manufacturer Price

$3,199
FrameAluminum
SuspensionFull, 165 / 170mm
ForkFox Performance Float 36
ShockFox Float DPS Performance
Wheels27.5″ Aluminum
Drivetrain1 × 11
GroupsetSLX
BrakesShimano Deore Hydraulic Disc
SeatpostDropper
Learn about Cannondale
Where to Buy
Similar Bikes
Top Comparison
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)

22 mph

Jekyll 4

26 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

Feedback?

View all reviews

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.

Read Review

Mountain Bike Action
Spotted - Cannondale's Prototype Jekyll 29er

Jul 2018 · McCoy

There were plenty of sweet bikes and products on display at Eurobike this year. Walking through the WTB booth we spotted Marco Osborne's Jekyll with

Read Review

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

Read Review

Flow Mountain Bike
Tested: Cannondale Jekyll 2

Sep 2017

Watch our full video review below:  So what’s new? Everything. Cannondale went right back to the fundamentals with this one, leaving a lot of previous development behind. We think it was the right call. Cannondale’s mountain bikes have been crying out for an injection of practicality and rider-first design, and with Jeremiah Boobar (the man …

Highs
  • Great geometry and handling for Enduro riding.

  • Simple and more user-friendly suspension.

  • Built to survive the toughest stages.

Lows
  • Suspension isn't supportive if you favour a plush setup with more sag.

Read Review

BikeRadar
Cannondale Jekyll 2 review

Aug 2017 · Guy Kesteven

Excellent geometry and kit plus unique shock create a crazy-fast enduro ripper. Buy if you want sorted shape, pert/plush performance with metal wheel toughness

Highs
  • Gemini shock system allows instant switching between super-plush speed or a tighter, more dynamic ride

  • Long-stretch/slack-head geometry, wide/short cockpit and XL front tyre create a massively confident front end

  • Excellent tough trail spec

Lows
  • Weight is pretty chunky for a medium-size £5k bike

  • Limited DIY tuning potential of the linear-feeling rear shock

Read Review

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 …

Read Review

Dirt Mountainbike
Cannondale Jekyll

Jul 2017 · Sjones

Bigger, faster and super comfortable

Read Review

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

Read Review

Geometry
Specs
Build
Frame

All-New Jekyll, 165mm travel, SmartForm C1 Alloy, carbon shock link, Ai offset drivetrain, ISCG05, BB30, flat mount brake, tapered headtube

BB StandardBB30, Press Fit

Fork

Fox Float 36 Performance, 27.5, 170mm, 110x15, tapered steerer, 44mm offset

Travel170mm

Spring TypeAir

Shock

Fox Float Performance DPS EVOL w/ Gemini remote-actuated dual mode air spring system, Flow Mode - 165mm / Hustle Mode - 130mm

Travel165mm

Bottom Bracket

Cannondale BB30

Headset

Integrated, 1-1/8 to 1.5, sealed angular contact bearings

Stem

Cannondale C3, 6061 Alloy, 1-1/8, 31.8, 0°, 35mm

Handlebar

Cannondale C3 Riser, 6061 Alloy, 15mm rise, 4° up, 9° back, 31.8, 780mm

Saddle

Fabric Radius Scoop

Seatpost

TransX dropper, Internal Routing, 31.6, 120mm drop

TypeDropper

Pedals

N/A

Grips

Cannondale Locking Grips

Groupset
Rear Derailleur

Shimano SLX, 11-Speed

Front Derailleur

N/A

Crank

Cannondale Si, BB30, SpideRing 30T, Ai offset

Shifters

Shimano SLX, 11-Speed

Cassette

Shimano SLX 11-46

Chain

KMC X11, 11-speed

Brakes

Shimano Deore

TypeShimano Deore Hydraulic Disc

Brake Levers

Shimano Deore

Wheels
Rims

WTB STP i25, 25mm inner, TCS Tubeless Ready 27.5, 32h

Spokes

DT Swiss Champion 2.0

Front Hub

Formula w/ HG driver - 110x15 thru front / 148x12 thru rear w/Ai offset

Rear Hub

Formula w/ HG driver - 110x15 thru front / 148x12 thru rear w/Ai offset

Tires

Maxxis Minion DHF 27.5x2.5 front, DHR II 2.4 rear, Dual Compound, folding, tubeless ready

Rider Notes
Riders Also Viewed

First added April 13

Last updated April 13

Not listed for 3,339 days