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Stumpjumper Comp Alloy 27.5

2020 Stumpjumper Comp Alloy 27.5

The Stumpjumper Comp Alloy 27.5 combines the balanced stiffness and incredible precision of our sidearm frame design with a 12-speed SRAM NX Eagle drivetrain. The end result is a bike that outperforms its price tag by a wide margin.

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.

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. Total control.

MASSIVE BANG FOR YOUR BUCK

• Sidearm frame design offers balanced stiffness and precise handling.

• FOX DPS Performance rear shock delivers perfectly-dialed rear suspension.

• NX Eagle 12-speed drivetrain gives you single-ring simplicity and gearing to spare.

Technical Specifications

FRAMESET

FRAME

M5 alloy chassis and rear-end, asymmetrical design, 27.5 Trail Geometry, threaded BB, fully enclosed internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 150mm 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, 210x52.5mm

FORK

FOX FLOAT RHYTHM, 34, GRIP damper, 44mm offset, 2-position sweep adjust, 15x110mm, tapered alloy steerer, 150mm 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

SRAM Guide R, hydraulic disc, organic pads, Guide S4 4-piston caliper, 200mm

REAR BRAKE

SRAM Guide R, hydraulic disc, organic pads, Guide S4 4-piston caliper, 180mm

DRIVETRAIN

REAR DERAILLEUR

SRAM NX Eagle, 12-speed

SHIFT LEVERS

SRAM NX Eagle, trigger, 12-speed

CASSETTE

SRAM NX Eagle, 12-speed, 11-50t

CHAIN

SRAM NX Eagle, 12-speed

CRANKSET

SRAM NX Eagle, DUB, 170mm

CHAINRINGS

Steel, 30T

BOTTOM BRACKET

SRAM DUB, BSA 73mm, Threaded

WHEELS

RIMS

Roval Traverse 27.5, hookless alloy, 30mm inner width, tubeless ready

FRONT HUB

Specialized, sealed cartridge bearings, 15x110mm spacing, 28h

REAR HUB

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

SPOKES

DT Swiss Industry

FRONT TIRE

Butcher, GRID casing, GRIPTON® compound, 2Bliss Ready, 27.5 x 2.6"

REAR TIRE

Eliminator, GRID TRAIL casing, GRIPTON® compound, 2Bliss Ready, 27.5 x 2.6"

INNER TUBES

Presta, 40mm 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

SMLXL
Crank Length170170170170
Handlebar Width780mm780mm780mm780mm
Stem Length45454545
Saddle Width143mm143mm143mm143mm
Seatpost Length375438438438
Stack581mm592mm596mm623mm637mm
Reach405mm415mm435mm455mm480mm
Head Tube Length100mm105mm110mm140mm155mm
Head Tube Angle66.5°65.5°65.5°65.5°65.5°
BB Height325mm336mm336mm336mm336mm
BB Drop28mm21mm21mm21mm21mm
Trail103mm112mm112mm112mm112mm
Fork Length, Full522mm542mm542mm542mm542mm
Fork Rake/Offset46mm46mm46mm46mm46mm
Front Center696mm726mm748mm780mm812mm
Chainstay Length432mm432mm432mm432mm432mm
Wheelbase1127mm1157mm1179mm1212mm1243mm
Top Tube Length, Horizontal544mm570mm595mm627mm660mm
Bike Standover Height742mm752mm757mm769mm770mm
Seat Tube Length380mm380mm410mm455mm505mm
Seat Tube Angle76.5°75.3°75°74.6°74.2°
Geometry

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