Bicycle Archive · Specification report

2020 Cannondale Jekyll 29 4

Velopedia Archive ID 900003033

Overview

Model year	2020
Brand	Cannondale
Model	Jekyll 29 4
Bicycle type	Mountain
Archive ID	900003033
Colors	Mantis (MAT)
Sizes	S, M, L, XL

Frameset

Frame construction	All-New, SmartForm C1 Alloy, 150mm travel, Ai offset drivetrain, ISCG05, BB30-83, flat mount brake, tapered headtube
Frame material	Aluminum
Fork	RockShox Lyrik Select, 150mm, DebonAir, 15x110, tapered steerer, 42mm offset
Rear shock	RockShox Deluxe Select Plus, DebonAir

Drivetrain

Shifters	SRAM NX Eagle, 12-speed
Rear derailleur	SRAM NX Eagle
Crankset	Truvativ Stylo 6K DUB, 30T, Ai offset
Bottom bracket	Cannondale BB30
Rear cogs	SRAM PG-1230, NX Eagle, 11-50, 12-speed
Chain	SRAM NX Eagle, 12-speed
Pedals	Not Included

Brakes

Brakes	Shimano MT500 hydro disc, 180/180mm RT66 rotors

Cockpit & contact points

Headset	Integrated, 1-1/8 to 1.5”, sealed angular contact bearings
Handlebar	Cannondale 3 Riser, 6061 Alloy, 15mm rise, 8° sweep, 4° rise, 780mm
Stem	Cannondale 3, 3D Forged 6061 Alloy, 1-1/8”, 31.8, 0°
Saddle	Fabric Scoop Shallow Sport, steel rails
Seatpost	Cannondale DownLow Dropper, internal routing, 31.6, 125mm (S), 150mm (M-XL)

Wheels & tires

Hubs	Formula 15x110 Formula 12x148 w/ HG driver 12x148
Rims	WTB ST i29 TCS, 32h, tubeless ready
Spokes	DT Swiss Champion
Front tire	(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
Rear tire	(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
Wheel size	29"

Geometry · SM

Seat tube	400 mm
Effective top tube	586 mm
Top tube	568 mm
Head tube	102 mm
Head-tube angle	65°
Seat-tube angle	75°
Chainstay / rear center	442 mm
Wheelbase	1179 mm
Bottom-bracket drop	16 mm
Bottom-bracket height	360 mm
Reach	419 mm
Stack	598 mm
Standover height	760 mm
Fork offset / rake	42 mm
Front center	738 mm
Trail	130 mm

Geometry · MD

Seat tube	430 mm
Effective top tube	611 mm
Top tube	589 mm
Head tube	115 mm
Head-tube angle	65°
Seat-tube angle	75°
Chainstay / rear center	442 mm
Wheelbase	1207 mm
Bottom-bracket drop	16 mm
Bottom-bracket height	360 mm
Reach	440 mm
Stack	610 mm
Standover height	766 mm
Fork offset / rake	42 mm
Front center	765 mm
Trail	130 mm

Geometry · LG

Seat tube	460 mm
Effective top tube	636 mm
Top tube	613 mm
Head tube	127 mm
Head-tube angle	65°
Seat-tube angle	75°
Chainstay / rear center	442 mm
Wheelbase	1234 mm
Bottom-bracket drop	16 mm
Bottom-bracket height	360 mm
Reach	462 mm
Stack	621 mm
Standover height	776 mm
Fork offset / rake	42 mm
Front center	792 mm
Trail	130 mm

Geometry · XL

Seat tube	520 mm
Effective top tube	664 mm
Top tube	641 mm
Head tube	140 mm
Head-tube angle	65°
Seat-tube angle	75°
Chainstay / rear center	442 mm
Wheelbase	1264 mm
Bottom-bracket drop	16 mm
Bottom-bracket height	360 mm
Reach	487 mm
Stack	633 mm
Standover height	788 mm
Fork offset / rake	42 mm
Front center	823 mm
Trail	130 mm

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on October 26, 2026.