Stumpjumper
Part No.  

Stumpjumper

Part No.  21987
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Stumpjumper
Overview
Technical Specifications
Reviews
Competitive XC Hardtail DESIGNED TO FLY With a FACT carbon or M5® alloy frame, the Stumpjumper® is designed to fly with unbeatable efficiency, super low weight and precision handling that'll guide you through even the stickiest of situations.

Inside Tech TECH We've been continually refining the Stumpjumper for over two decades, and by now, we've tweaked and tuned the frame materials we use to the point of near perfection (yet, as great as they are, we're always pushing to make them better.) Today's FACT carbon or M5 alloy hardtails both feature completely proprietary frame materials that have been developed by our engineers for unparalleled efficiency, low weight and precision handling.

Useful Links Manuals/Tech Bulletins

  • M5 alloy hardtail frame, fully manipulated DT, TT, SS, CS, ST with new larger diameter/stiffer ORE DT/TT and Mono-stay seatstays
  • Fox F90 RL fork with 90mm travel, air spring, lock out and alloy steerer
  • Shimano M542 crankset, 2pc custom for Specialized
  • Crank Brothers Smarty pedals custom for Specialized
  • Specialized Fast Trak Control LK tyres, 29x2.0", 60TPI, tubeless ready with aramid bead and dual compound

Technical Specifications

DRIVETRAIN
CHAIN SRAM PC-971 w/ Power Link
BOTTOM BRACKET Shimano M542, 2pc custom for Specialized
CRANKSET Shimano A/A/S 2pc custom
FRONT DERAILLEUR Shimano M581 LX, 34.9mm clamp, bottom swing, dual pull
SHIFT LEVERS SRAM X-7, aluminum 9-speed trigger
CHAINRINGS 22S/32A/44A, 4 bolt 104/64mm
REAR DERAILLEUR SRAM X-9, 9-speed, mid cage
SUSPENSION
FORK Fox F90 RL, 90mm travel, air spring, rebound/compression adjust w/ lock out, alloy steerer
WHEELS
FRONT HUB Specialized Hi Lo disc, 28h CNC flange and disc mount, sealed cartridge bearing, 9mm DT RWS alloy QR
REAR HUB Shimano custom M525SL hub for Specialized, 32h, alloy QR
SPOKES DT Swiss 1.8mm stainless, alloy nipples
FRONT TIRE Specialized Fast Trak Control LK, 26x2.0"", 60TPI, tubeless ready aramid bead, dual compound
RIMS Mavic X317, 26"", black w/ eyelets, 28/32h
REAR TIRE Specialized Fast Trak Control LK, 26x2.0"", 60TPI, tubeless ready aramid bead, dual compound
COCKPIT
SADDLE Specialized XC MTB, hollow Cr-Mo rails, SL foam
STEM Specialized adjustable rise, 31.8mm clamp, 3D forged w/CNC finish
HANDLEBARS Specialized XC flat 31.8mm bar, 2014 butted alloy, 6 degree backsweep, 600mm wide
BRAKES
FRONT BRAKE Avid SD-5R, cantilevers, cartridge pads, lightweight compressionless housing
BRAKE LEVERS Avid FR-5
REAR BRAKE Avid SD-5R, cantilevers, cartridge pads, lightweight compressionless housing
ACCESSORIES
PEDALS Crank Brothers Smarty custom for Specialized
FRAMESET
HEADSET 1 1/8"" threadless, alloy cups w/ 10mm insertion, sealed cartridge bearing
SEAT BINDER Alloy single bolt, 34.9mm clamp ID
FRAME M5 alloy hardtail, fully manipulated DT, TT, SS, CS, ST w/ shared tube Mono-stay seatstays, new larger diameter/stiffer ORE DT/TT, disc mount, replaceable derailleur hanger

Reviews