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Stumpjumper Expert 27.5
2018 Stumpjumper Expert 27.5
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.
Technical Specifications
FRAMESET
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
SEAT BINDER
Alloy, 34.9mm
WHEELS
RIMS
Roval Traverse Carbon 27.5, hookless carbon, 30mm inner width, 24/28h, tubeless ready, hand-built
REAR HUB
Specialized, sealed cartridge bearings, 12x148mm thru-axle, 28h
FRONT TIRE
Butcher, GRID casing, Gripton compound, 2Bliss Ready, 27.5 x 2.6"
FRONT HUB
Specialized, sealed cartridge bearings, 15x110mm spacing, 24h
SPOKES
DT Swiss Industry, stainless, 3-cross, 2.0"
INNER TUBES
Standard, Presta valve
REAR TIRE
Butcher, GRID casing, Gripton compound, 2Bliss Ready, 27.5 x 2.6"
SUSPENSION
REAR SHOCK
RockShox Monarch RT3, Rx Trail Tune, AUTOSAG, rebound and 3-position compression adjust, 197x48mm
FORK
FOX 34 Performance 27.5, 44mm offset, 15x110mm thru-axle, 150mm of travel
DRIVETRAIN
SHIFT LEVERS
SRAM GX Eagle, trigger, 12-speed
REAR DERAILLEUR
SRAM GX Eagle, 12-speed
CHAINRINGS
32T
CHAIN
SRAM GX Eagle, 12-speed w/ PowerLock®
CRANKSET
Truvativ Descendant, aluminum, Boost™ 148, 170mm crankarm, 30mm spindle
CASSETTE
SRAM GX Eagle, 12-speed, 10-50t
BOTTOM BRACKET
PF30
COCKPIT
SADDLE
Body Geometry Henge Comp, hollow Cr-Mo rails, 143mm
GRIPS
Specialized Sip Grip, half-waffle, S/M: regular thickness, L/XL: XL thickness
HANDLEBARS
Specialized Trail, 7050 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 780mm, 31.8mm clamp
STEM
Specialized Trail, 3D forged alloy, 4-bolt, 6-degree rise
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
ACCESSORIES
PEDALS
Specialized Platform, Cr-Mo, 9/16" spindle
BRAKES
REAR BRAKE
SRAM Guide R, hydraulic disc, organic pads, Guide S4 4-piston caliper, 180/160mm rotor
FRONT BRAKE
SRAM Guide R, hydraulic disc, organic pads, Guide S4 4-piston caliper, 200/180mm rotor
* Weights based on production painted frames as pictured. Actual weights will vary based on colorway, frame size, and component variation. Specifications are subject to change without notice.
Geometry
| S | M | L | XL | |
|---|---|---|---|---|
| Crank Length | 170MM | 170MM | 170MM | 170MM |
| Handlebar Width | 780mm | 780mm | 780mm | 780mm |
| Stem Length | 45MM | 60MM | 60MM | 60MM |
| Saddle Width | 143mm | 143mm | 143mm | 143mm |
| Seatpost Length | 390mm | 430mm | 430mm | 430mm |
| Stack | 590mm | 599mm | 608mm | 617mm |
| Reach | 388mm | 414mm | 442mm | 464mm |
| Head Tube Length | 105mm | 115mm | 125mm | 95mm |
| Head Tube Angle | 67° | 67° | 67° | 67° |
| BB Drop | 18mm | 18mm | 18mm | 18mm |
| Trail | 104mm | 104mm | 104mm | 104mm |
| Fork Length, Full | 542mm | 542mm | 542mm | 542mm |
| Fork Rake/Offset | 46mm | 46mm | 46mm | 46mm |
| Front Center | 677mm | 706mm | 738mm | 764mm |
| Chainstay Length | 420mm | 420mm | 420mm | 420mm |
| Wheelbase | 1096mm | 1126mm | 1158mm | 1184mm |
| Top Tube Length, Horizontal | 558mm | 587mm | 618mm | 646mm |
| Bike Standover Height | 742mm | 748mm | 762mm | 764mm |
| Seat Tube Length | 396mm | 430mm | 468mm | 523mm |
| Seat Tube Angle | 74° | 74° | 74° | 74° |
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