Stumpjumper ST Comp Alloy 29

2020 Stumpjumper ST Comp Alloy 29

Die-hard aluminum fans rejoice. Our snappy and nimble Stumpjumper ST is available in M5 alloy. It’s perfect for riders seeking a quick and capable all-rounder. The Stumpjumper ST Comp Alloy 29 ups the ante with full Fox suspension and reliable Shimano drivetrain.

THE ULTIMATE TRAIL BIKE

The innovative sidearm frame design makes a lighter, better-handling bike. By directly connecting all three mounting points of the rear-end and shock to the frame, we’ve increased both stiffness and performance over bumps. End result? Total control.

PERFECTLY-BALANCED SUSPENSION

Our in-house suspension-tuning team develops custom shock tunes, perfectly paired to each bike’s kinematics. We call this Rx Tune and while it’s not the easy way to build a suspension bike, it’s worth it. You feel Rx Tune as perfectly-balanced suspension.

A NO-NONSENSE BUILD

• Sidearm frame design offers balanced stiffness and precise handling.

• The FOX DPS Performance rear shock equals perfectly dialed rear-suspension.

• FOX FLOAT Rhythm 34 fork with 130mm of travel offers great adjustabiity.

Technical Specifications

FRAMESET

FRAME

M5 alloy chassis and rear end, asymmetrical design, 29 Trail Geometry, threaded BB, fully enclosed internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 120mm of travel

SEAT BINDER

Specialized bolt-type, alloy, 38.6mm

SUSPENSION

REAR SHOCK

FOX FLOAT DPS Performance, Rx Trail Tune, rebound and 3-position compression adjust, 190x42.5MM

FORK

FOX FLOAT RHYTHM, 34, GRIP damper, 51mm offset, 2-position sweep adjust, 15x110mm, tapered alloy steerer, 130mm of travel

COCKPIT

STEM

Specialized Trail, 3D-forged alloy, 4-bolt, 6-degree rise

HANDLEBARS

Specialized Trail, 6061 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 31.8mm clamp, XS 720mm, S-XL 750mm,

GRIPS

Specialized Sip grip, half-waffle, S/M: regular thickness, L/XL: XL thickness

SADDLE

Body Geometry Phenom Comp, hollow Cr-Mo rails, 143mm

SEATPOST

X-Fusion Manic, infinite adjustable, two-bolt head, bottom mount cable routing, remote SRL LE lever, 34.9mm, S: 125mm, M/L: 150mm, XL: 170mm

BRAKES

FRONT BRAKE

Shimano MT-501, hydraulic disc, resin pad

REAR BRAKE

Shimano MT-501, hydraulic disc, resin pad

DRIVETRAIN

REAR DERAILLEUR

Shimano SLX, Shadow Plus, 11-speed

SHIFT LEVERS

Shimano SLX, 11-speed

CASSETTE

Shimano SLX, 11-speed, 11-46t

CHAIN

KMC X11, 11-speed w/ Missing Link™

CRANKSET

Race Face Ride, 170mm

CHAINRINGS

Steel, 30T

BOTTOM BRACKET

Threaded BB, 24mm spindle

WHEELS

RIMS

Double-wall alloy, 27mm internal width

FRONT HUB

Specialized, sealed cartridge bearings, 15x110mm thru-axle, 32h

REAR HUB

Specialized, sealed cartridge bearings, 12x148mm thru-axle, 32h

SPOKES

Stainless, 14g

FRONT TIRE

Eliminator, GRID TRAIL casing, GRIPTON® compound, 2Bliss Ready, 29x2.3"

REAR TIRE

Purgatory, GRID Casing, GRIPTON® compound, 29x2.3"

INNER TUBES

Standard, Presta valve

* Weights based on production painted frames as pictured. Actual weights will vary based on colourway, frame size, and component variation. Specifications are subject to change without notice.

Geometry

	S	M	L	XL
Crank Length	170	170	170	170
Handlebar Width	780mm	780mm	780mm	780mm
Stem Length	45	45	45	45
Saddle Width	143mm	143mm	143mm	143mm
Seatpost Length	375	438	438	478
Stack	612mm	612mm	635mm
Reach	415mm	435mm	455mm
Head Tube Length	100mm	100mm	125mm
Head Tube Angle	67.5°	67.5°	67.5°
BB Height	333mm	333mm	333mm
BB Drop	39mm	39mm	39mm
Trail	99mm	99mm	99mm
Fork Length, Full	540mm	540mm	540mm
Fork Rake/Offset	51mm	51mm	51mm
Front Center	708mm	728mm	758mm
Chainstay Length	437mm	437mm	437mm
Wheelbase	1143mm	1163mm	1192mm
Top Tube Length, Horizontal	570mm	593mm	624mm
Bike Standover Height	750mm	756mm	769mm
Seat Tube Length	380mm	410mm	455mm
Seat Tube Angle	75.8°	75.5°	75.1°