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Sorry - this product is no longer available

The Cannondale Jekyll 4 29er Mountain Bike is no longer available, although you may find similar or newer versions below.


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Cannondale Jekyll 4 29er Mountain Bike  2020
This precision instrument is for the enduro artists the ones who will use all 150mm of its Fox Float performance travel and poppy quickness to dance and float through the chop and chunder on their way to the top step. Unlock your potential of this punchy ripper purpose-built for hunting enduro podiums.

Cyclestore is an Official Cannondale UK dealer and stockist. Cyclestore.co.uk carries the full range of Cannondale Road and Mountain Bikes. To find out more about Cannondale bikes, go to the Cannondale Bikes homepage.

This precision instrument is for the enduro artists the ones who will use all 150mm of its Fox Float performance travel and poppy quickness to dance and float through the chop and chunder on their way to the top step. Unlock your potential of this punchy ripper purpose-built for hunting enduro podiums.

Co-developed with RockShox the killer performance fork and rear shocks outperform the competition on all terrain. Easily adjust the dampening for the customized responsive feel you want either for pumping through turns sprints and traction-challenged climbs. Or for full travel when things get rough. Asymmetric Integration (Ai) delivers some of the shortest stays on the trail yet has more tyre clearance and frame stiffness than even Boost frames can muster. For this 2020 model Cannondale have kitted the Jekyll out with bigger more capable 29” wheels for improved rolling ability and speed. Plus a rear wheel that’s stiffer and stronger thanks to the Ai even-dish build. It all adds up to the kind of agility and traction that must be ridden to be believed. The Jeckyll Delivers all the slack stability you’d expect from a top enduro rig but with uncanny agility and snap thanks to the ultra-short chainstays of its Ai rear end. Placing a link between the swingarm and the shock has allowed Cannondale’s engineers to customise the system’s leverage ratios for optimal suspension response throughout the stroke and keep the suspension active under braking while retaining the stiffness durability and reliability of a single pivot design. With its SmartForm alloy construction the stout Ai rear end and LockR pivots holding everything tightly together the Jekyll has incredible chassis stiffness for precise control and explosive acceleration.

Key Features

    • SmartForm C1 Alloy Frame has a stiff but light construction allowing you to convert more power into speed and to easily maneuverer the bike on descents
    • RockShox Lyrik Select 150mm Fork features adjustable compression dampening for that perfect balance and impressive performance in a vast range of terrain
    • RockShox Deluxe Select Plus 150mm Rear Shock delivers high-end suspension performance for superior flow and descending capability
    • SRAM NX Eagle 1x12 Speed Drivetrain provides a smoother more precise shifting experience with improved durability for long lasting performance
    • Shimano MT500 Hydraulic Disc Brakes give powerful controllable and consistent stopping power with minimal effort in all conditions
    • Maxxis minion 29 x 2.5(F) 29 x 2.4(R) Tyres offer an aggressive tread in high-volume casing designed with great traction in mind

Model Number C21400M
Consumer Friendly Name Jekyll 29 4
Frame All-New SmartForm C1 Alloy 150mm travel Ai offset drivetrain ISCG05 BB30-83 flat mount brake tapered headtube
Fork RockShox Lyrik Select 150mm DebonAir 15x110 tapered steerer 42mm offset
Rear Shock RockShox Deluxe Select Plus DebonAir
Rims WTB ST i29 TCS 32h tubeless ready
Spokes DT Swiss Champion
Tires (F) Maxxis Minion DHF 29 x 2.5 WT Dual compound EXO puncture protection tubeless ready (R) Maxxis Minion DHR II 29 x 2.4 WT Dual compound EXO puncture protection tubeless ready
Pedals Not Included
Crank Truvativ Stylo 6K DUB 30T Ai offset
Bottom Bracket Cannondale BB30
Chain SRAM NX Eagle 12-speed
Rear Cogs SRAM PG-1230 NX Eagle 11-50 12-speed
Front Derailleur Null
Rear Derailleur SRAM NX Eagle
Shifters SRAM NX Eagle 12-speed
Handlebar Cannondale 3 Riser 6061 Alloy 15mm rise 8deg sweep 4deg rise 780mm
Grips Fabric Funguy Locking Grips
Stem Cannondale 3 3D Forged 6061 Alloy 1-1/8 31.8 0deg
Headset Integrated 1-1/8 to 1.5 sealed angular contact bearings
Brakes Shimano MT500 hydro disc 180/180mm RT66 rotors
Brake Levers Shimano MT500 hydro disc
E-Bike Display Null
E-Bike Battery Null
E-Bike Charger Null
E-Bike Drive Unit Null
Saddle Fabric Scoop Shallow Sport steel rails
Seatpost Cannondale DownLow Dropper internal routing 31.6 125mm (S) 150mm (M-XL)
Speeds 12
Fork Travel (F) 150mm
Frame Details 150mm travel|Ai offset drivetrain|ISCG05|BB30-83|Flat mount brake|Tapered headtube
Frame Travel (R) 150mm
Front Hub Formula 15x110
Front Tire Size 2.4
Material Aluminum
Rear Hub Formula 12x148 w/ HG driver 12x148
Tire Size(R) 2.5
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