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Specialized Stumpjumper 12-Speed Comp Alloy 29 Men's Mountain Bike

  • 37 years on from the first MTB production bike ever made the Stumpjumper remains revolutionary
  • Built with 150mm travel at the front and 140mm of travel at the rear end of the bike
  • Asymmetrical frame shape provides incredible stiffness from your feet to your hands
  • 12-speed SRAM NX groupset brings a high performance drivetrain at fantastic value for money




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Product Information

Specialized Stumpjumper 12-Speed Comp Alloy 29 Men's Mountain Bike

37 years and counting. The Specialized Stumpjumper became the first production Mountain Bike and is as revolutionary in this year's release as it was in 1981 and still, the go-to full-suspension Mountain Bike at the TriStore. Specialized have completely redesigned the frame, building the Comp edition with M5 aluminium, Specialized's highest grade of aluminium. The new asymmetrical frame shape is designed to provide an exceptional level of stiffness. Frame strength is improved with the two triangle design that helps to improve the natural feel of the trail. You will find 150mm of travel at the front provided through the Fox 34 rhythm fork which helps to boost handling and adjustability, ready for whatever your route has to throw at you. The 29" wheel design decreases the angle of attack between you and the rocks providing true comfort and expert speed. Specialized simply continue the MTB revolution. Finally, Specialized have revamped the Stumpjumpers drivetrain kitting it out with the latest 12-speed SRAM NX Eagle groupset which ensures you can go further, faster and higher than ever before. 

Full Specification



Redesigned Frame

The completely redesigned alloy Stumpjumper frame features an M5 alloy front- and rear-end, an asymmetrical design, and Specialized's 29 Trail Geometry, so it's just the right amount of both capable and comfortable. 


Travel Performance

The FOX DPS Performance rear shock features our Rx Trail Tune, ensuring that no matter the wheel or frame size, your bike is dialled-in perfectly.


Fox 34 Suspension

A FOX 34 Rhythm fork handles suspension duties up front, with stiff stanchions and plenty of adjustabilities.



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, 140mm of travel

Seat Binder - Alloy, 38.6mm



Fork - FOX FLOAT Rhythm 34, GRIP Damper, 51mm offset, 2-position sweep adjust, 15x110mm, tapered alloy steerer, 150mm of travel

Rear Shock - FOX FLOAT DPS Performance, Rx Trail Tune, rebound and 3-position compression adjust, 210x50mm



Chain - SRAM NX Eagle, 12-speed

Bottom Bracket - SRAM DUB, threaded BB

Crankset - SRAM NX Eagle, DUB, 170mm

Shift Levers - SRAM NX Eagle, trigger, 12-speed

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

Chainrings - Steel, 32T

Rear Derailleur - SRAM NX Eagle, 12-speed



Front Hub - Specialized, sealed cartridge bearings, 15x110mm spacing, 28h

Rear Hub - Specialized, sealed cartridge bearings, 12x148mm thru-axle, 28h

Spokes - DT Swiss Industry

Rims - Roval Traverse 29, hookless alloy, 30mm inner width, tubeless ready

Front Tyre - Butcher, GRID casing, GRIPTON® compound, 2Bliss Ready, 29x2.6"

Rear Tyre - Purgatory, GRID casing, GRIPTON® compound, 2Bliss ready, 29 x2.6"



Saddle - Body Geometry Phenom Comp, Adaptive Edge design, hollow Cr-Mo rails, 143mm

Seatpost - X-Fusion Manic, infinite adjustable, two-bolt head, bottom mount cable routing, remote SRL LE lever, 34.9mm, XS: 100mm S: 125mm, M/L: 150mm of travel

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

Handlebars - Specialized, 6061 alloys, 6-degree upsweep, 8-degree back sweep, 27mm rise, 780mm width

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



Front Brake - SRAM Guide R, hydraulic disc, organic pads, Guide S4 4-piston calliper, 200mm

Rear Brake - SRAM Guide R, hydraulic disc, organic pads, Guide S4 4-piston calliper, 180mm



Pedals - Specialized Dirt