Stumpjumper Expert 27.5
Part No.  

Stumpjumper Expert 27.5

Part No.  128850
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Stumpjumper Expert 27.5
Overview
Technical Specifications
Geometry

If your idea of trail riding follows the philosophy of "go big or go home," you simply can't beat the agility and responsiveness that a 27.5 wheels provide. Knowing this, we built our Stumpjumper Expert 27.5 to be the ultimate all-rounder trail bike.

It features our FACT 9m carbon fiber for the bulk of the construction in order to provide an ultra-lightweight, strong, and stiff frame. The carbon molding process also allowed us to revolutionize how you carry your trail essentials with the all-new SWAT™ Door found at the down tube. This compartment will fit a tube, a tool, and pump without rattling or compromising the structural integrity of the frame.

You'll also find an aggressive, nimble geometry to complement the 27.5 wheels that features ridiculously short chainstays, a roomy top tube, a low bottom bracket, and a slacked out front end. And for the build, we spec'd some of SRAM's best performing and durable 12-speed components, a FOX 34 Performance fork with 150mm of travel, and hand-built Roval Traverse 27.5 carbon wheels. It's a bike that will have you never looking back—unless it's to see your buddies eating your dust.

  • FACT 9m carbon fiber Trail Chassis with Stumpjumper FSR M5 alloy rear end blends stiffness with light weight to form the pinnacle of efficiency, while fully enclosed cable routing and an integrated SWAT™ Door create exceptional handling and zero-hassle storage.
  • The FOX 34 fork features 150mm of plush travel to take on big hits and bumpy terrain with supreme confidence and efficiency.
  • SRAM's 12-speed GX Eagle drivetrain, with a Truvativ Descendent crank, features an ultra-wide gear range that delivers climbing and descending efficiency in spades. On top of this, the one-by setup is notorious for being next to impossible to drop a chain with, plus it provides a significant weight savings in comparison to a standard two-by setup.

Technical Specifications

DRIVETRAIN
CHAIN SRAM GX Eagle, 12-speed w/ PowerLock®
BOTTOM BRACKET PF30
CRANKSET Truvativ Descendant, aluminum, Boost™ 148, 170mm crankarm, 30mm spindle
SHIFT LEVERS SRAM GX Eagle, trigger, 12-speed
CASSETTE SRAM GX Eagle, 12-speed, 10-50t
CHAINRINGS 32T
REAR DERAILLEUR SRAM GX Eagle, 12-speed
SUSPENSION
FORK FOX 34 Performance 27.5, 44mm offset, 15x110mm thru-axle, 150mm of travel
REAR SHOCK RockShox Monarch RT3, Rx Trail Tune, AUTOSAG, rebound and 3-position compression adjust, 197x48mm
WHEELS
FRONT HUB Specialized, sealed cartridge bearings, 15x110mm spacing, 24h
REAR HUB Specialized, sealed cartridge bearings, 12x148mm thru-axle, 28h
INNER TUBES Standard, Presta valve
SPOKES DT Swiss Industry, stainless, 3-cross, 2.0""
RIMS Roval Traverse Carbon 27.5, hookless carbon, 30mm inner width, 24/28h, tubeless ready, hand-built
FRONT TIRE Butcher, GRID casing, Gripton compound, 2Bliss Ready, 27.5 x 2.6""
REAR TIRE Butcher, GRID casing, Gripton compound, 2Bliss Ready, 27.5 x 2.6""
COCKPIT
SADDLE Body Geometry Henge Comp, hollow Cr-Mo rails, 143mm
SEATPOST Command Post IRcc, 12-position micro-height adjustable, alien head design, bottom mount cable routing, remote SRL lever, 30.9mm, S: 100mm, M/L/XL: 125mm of travel
STEM Specialized Trail, 3D forged alloy, 4-bolt, 6-degree rise
HANDLEBARS Specialized Trail, 7050 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 780mm, 31.8mm clamp
GRIPS Specialized Sip Grip, half-waffle, S/M: regular thickness, L/XL: XL thickness
BRAKES
FRONT BRAKE SRAM Guide R, hydraulic disc, organic pads, Guide S4 4-piston caliper, 200/180mm rotor
REAR BRAKE SRAM Guide R, hydraulic disc, organic pads, Guide S4 4-piston caliper, 180/160mm rotor
ACCESSORIES
PEDALS Specialized Platform, Cr-Mo, 9/16"" spindle
FRAMESET
SEAT BINDER Alloy, 34.9mm
FRAME FACT 9m carbon front chassis w/ Specialized M5 Aluminum rear end, 27.5 Trail Geometry, SWAT™ Door integration, PF30 BB, fully enclosed internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 150mm of travel

Geometry

Geometry Chart

Stumpjumper - Geometry

S M L XL
  S M L XL
Crank Length 170MM 170MM 170MM 170MM
Stem Length 45MM 60MM 60MM 60MM
Seatpost Length 390mm 430mm 430mm 430mm
Saddle Width 143mm 143mm 143mm 143mm
Handlebar Width 780mm 780mm 780mm 780mm
Reach 388mm 414mm 442mm 464mm
Top Tube Length, Horizontal 558mm 587mm 618mm 646mm
Stack 590mm 599mm 608mm 617mm
Wheelbase 1096mm 1126mm 1158mm 1184mm
Chainstay Length 420mm 420mm 420mm 420mm
Front Center 677mm 706mm 738mm 764mm
BB Height, 650x2.6" 340mm 340mm 340mm 340mm
BB Drop 18mm 18mm 18mm 18mm
BB Height, 650x2.3" 335mm 335mm 335mm 335mm
Seat Tube Angle 74° 74° 74° 74°
Head Tube Angle 67° 67° 67° 67°
Seat Tube Length 396mm 430mm 468mm 523mm
Head Tube Length 95mm 105mm 115mm 125mm
Bike Standover Height 742mm 748mm 762mm 764mm
Fork Rake/Offset 46mm 46mm 46mm 46mm
Fork Length, Full 542mm 542mm 542mm 542mm
Trail 104mm 104mm 104mm 104mm