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2020 Cannondale Jekyll Carbon 29 1

Original specifications: 29" wheels · geometry for 4 published sizes.

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At a glance

Model year
2020
Category
Mountain
Sizes
S, M, L, XL
Colors
Champagne (CHP)
Geometry
4 manufacturer sizes
In this record
23 specifications · archived image · geometry
Archive ID
900003036
Campaign
Original buildCarbon · 29"

Manufacturer catalog

Published sizes and colors

4 sizes · 1 color

Manufacturer-published sizes and colors; availability and exact size/color pairings may vary by market or production run.

Published sizes

SMLXL

Published colors

Champagne (CHP)

Frameset

Frame ConstructionBallisTec Carbon front triangle, SmartForm C1 Alloy swingarm, 150mm travel, Ai offset drivetrain, ISCG05, PF30-83, flat mount brake, tapered headtube
Frame MaterialCarbon
ForkFox Float Factory 36, 150mm, Grip2 Damper, Kashima coating, 15x110, tapered steerer, 44mm offset
Rear ShockFox Float Factory DPX2 EVOL w/ Gemini dual mode air spring system (Flow Mode - 150mm / Hustle Mode - 120mm, Remote Activated), Kashima coating, 3-Pos adj.

Drivetrain

ShiftersShimano XT, 12-speed
Rear DerailleurShimano XTR, Shadow Plus
CranksetHollowGram, BB30 w/ X-Sync® SpideRing, 30T, Ai offset
Bottom BracketCannondale Alloy PressFit30
Rear CogsShimano XT, 10-51, 12-speed
ChainShimano XT, 12-speed
PedalsNot Included

Brakes

BrakesShimano XTR 4-piston hydro disc, 203/180mm RT900 rotors

Cockpit & Contact Points

HeadsetIntegrated, 1-1/8 to 1.5”, sealed angular contact bearings
HandlebarCannondale 1 Riser, Carbon, 15mm rise, 9° sweep, 4° rise, 780mm
StemCannondale 1, 3D Forged 6061 Alloy, 1-1/8”, 31.8, 0°
SaddleFabric Scoop Shallow Elite, cro-mo rails
SeatpostFox Factory Transfer Dropper, internal routing, 31.6, 100mm (S), 150mm (M-XL)

Wheels & Tires

Hubs(F) DT 350 15x110 (R) DT 350 12x148 w/ Micro Spline
RimsStan’s NoTubes Flow MK3, 32h, tubeless ready
SpokesDT Swiss Competition, straight pull (Ai Offset dish - rear)
Front TireMaxxis Assegai, 29 x 2.5”, 3C Compound, Max EXO puncture protection, tubeless ready
Rear TireMaxxis Assegai, 29 x 2.5”, 3C Compound, Max EXO puncture protection, tubeless ready
Wheel Size29"

Geometry

4 sizes · 16 measurements

Frame measurements by size.

All geometry measurements4 sizes · 16 measurements
MeasurementSMMDLGXL
Seat tube400 mm430 mm460 mm520 mm
Effective top tube586 mm611 mm636 mm664 mm
Top tube568 mm589 mm613 mm641 mm
Head tube102 mm115 mm127 mm140 mm
Head-tube angle65°65°65°65°
Seat-tube angle75°75°75°75°
Chainstay / rear center442 mm442 mm442 mm442 mm
Wheelbase1179 mm1207 mm1234 mm1264 mm
Bottom-bracket drop16 mm16 mm16 mm16 mm
Bottom-bracket height360 mm360 mm360 mm360 mm
Reach419 mm440 mm462 mm487 mm
Stack598 mm610 mm621 mm633 mm
Standover height760 mm766 mm776 mm788 mm
Fork offset / rake42 mm42 mm42 mm42 mm
Front center738 mm765 mm792 mm823 mm
Trail130 mm130 mm130 mm130 mm

Dimensions as recorded.

Gearing

Lower gears help on climbs. Higher gears suit higher speeds.

All published sizes30T · 10–51T · 12-speed
Lowest0.59:1 Highest3.00:1 Total range510%

Speed unavailable: wheel or tire size is missing or unclear.

How it works

Ratio = front teeth ÷ rear teeth. Hub gears also include the hub’s internal ratio. A 400% range means the highest ratio is four times the lowest.

Speeds are estimates from tire size and pedal cadence. Actual speeds vary.

Try other gearing

Parts & serviceability

Find replacement parts

Original specifications
Chain · Original
Shimano XT, 12-speed Search: Shimano XT, 12-speed chain
Retailer offers · Affiliate links
Cassette / rear cogs · Original
Shimano XT, 10-51, 12-speed Search: Shimano XT, 10-51, 12-speed cassette
Front tire · Original
Maxxis Assegai, 29 x 2.5”, 3C Compound, Max EXO puncture protection, tubeless ready
Retailer offers · Affiliate links
More parts (4)
Saddle · Original
Fabric Scoop Shallow Elite, cro-mo rails
Rear derailleur · Original
Shimano XTR, Shadow Plus Search: Shimano XTR 12-speed rear derailleur Before ordering: Confirm whether the drivetrain is mechanical or electronic before ordering.
Shifters · Original
Shimano XT, 12-speed Search: Shimano XT, 12-speed shifter Before ordering: Confirm whether the drivetrain is mechanical or electronic before ordering.
Seatpost · Original
Fox Factory Transfer Dropper, internal routing, 31.6, 100mm (S), 150mm (M-XL)

Based on the original build. Confirm the model, size and fit before ordering; installed parts may differ. As an Amazon Associate I earn from qualifying purchases. Velopedia may also earn from qualifying eBay purchases. Velopedia may also earn from qualifying retailer purchases.

Bike-specific inspection checklist 23 checks based on 6 archived component groups Open checklistClose checklist
0 of 23 checked Progress stays in this browser for this bike.

This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.

Archived: 2020 Cannondale Jekyll Carbon 29 1 · Mountain · Published sizes: S, M, L, XL

Archived: Frame: BallisTec Carbon front triangle, SmartForm C1 Alloy swingarm, 150mm travel, Ai offset drivetrain, ISCG05, PF30-83, flat mount brake, tapered headtube · Fork: Fox Float Factory 36, 150mm, Grip2 Damper, Kashima coating, 15x110, tapered steerer, 44mm offset

Archived: Fork: Fox Float Factory 36, 150mm, Grip2 Damper, Kashima coating, 15x110, tapered steerer, 44mm offset · Rear shock: Fox Float Factory DPX2 EVOL w/ Gemini dual mode air spring system (Flow Mode - 150mm / Hustle Mode - 120mm, Remote Activated), Kashima coating, 3-Pos adj.

Archived: Shifters: Shimano XT, 12-speed · Rear derailleur: Shimano XTR, Shadow Plus · Crankset: HollowGram, BB30 w/ X-Sync® SpideRing, 30T, Ai offset · Bottom bracket: Cannondale Alloy PressFit30 · Rear cogs: Shimano XT, 10-51, 12-speed · Chain: Shimano XT, 12-speed

Archived: Brakes: Shimano XTR 4-piston hydro disc, 203/180mm RT900 rotors

Archived: Wheel size: 29" · Rims: Stan’s NoTubes Flow MK3, 32h, tubeless ready · Hubs: (F) DT 350 15x110 (R) DT 350 12x148 w/ Micro Spline · Front tire: Maxxis Assegai, 29 x 2.5”, 3C Compound, Max EXO puncture protection, tubeless ready · Rear tire: Maxxis Assegai, 29 x 2.5”, 3C Compound, Max EXO puncture protection, tubeless ready

Controls and contact points

Archived: Headset: Integrated, 1-1/8 to 1.5”, sealed angular contact bearings · Handlebar: Cannondale 1 Riser, Carbon, 15mm rise, 9° sweep, 4° rise, 780mm · Stem: Cannondale 1, 3D Forged 6061 Alloy, 1-1/8”, 31.8, 0° · Seatpost: Fox Factory Transfer Dropper, internal routing, 31.6, 100mm (S), 150mm (M-XL) · Saddle: Fabric Scoop Shallow Elite, cro-mo rails · Pedals: Not Included

Before and during the test ride

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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.

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