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Stumpjumper Expert 6Fattie/29
2018 Stumpjumper Expert 6Fattie/29
After one ride on the Stumpjumper Expert 6Fattie/29, you'll never be merely "riding trail" again. It's a bold statement to make, but the increase in traction, control, and floatation that our 6Fattie Wheel/Tire System provides is nothing short of revolutionary. And then, of course, there's the rest of the 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 revolutionary 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.
Then there's our 6Fattie Wheel/Tire System that takes 27.5 wheels and wraps them in 27.5x3.0" tires to provide a drastic, life-changing level of traction, control, and floatation. Impressively, 6Fattie pulls this off without sacrificing anything to climbing prowess. This system also allows you the opportunity to toggle between 29-inch wheels (not included) and 6Fattie wheels, allowing the ultimate in configuration options for the trail at hand. Further improving the ride, you'll also find an aggressive, trail-eating geometry that features ridiculously short chainstays, a roomy top tube, a low bottom bracket, a slacked out front end, and our proprietary Rx Trail Tune at the shock.
And when you factor in a build spec that has some of SRAM's best performing and durable components, you have 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, 29/6Fattie Trail Geometry, SWAT™ Door integration, PF30 BB, fully enclosed internal cable routing, ManFu link, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 135mm of travel
SEAT BINDER
Alloy, 34.9mm
SUSPENSION
REAR SHOCK
RockShox Monarch RT3, Rx Trail Tune, AUTOSAG, rebound and 3-position compression adjust, 197x48mm
FORK
FOX 34 Performance 29/6Fattie, 51mm offset, 15x110mm thru-axle, 150mm of travel
WHEELS
RIMS
Roval Traverse Carbon 27.5, hookless carbon, 38mm inner width, 24/28h, tubeless ready, hand-built
REAR HUB
Specialized, sealed cartridge bearings, 12x148mm thru-axle, 28h
SPOKES
DT Swiss Industry, stainless, 3-cross, 2.0"
FRONT TIRE
Purgatory, GRID casing, Gripton compound, 2Bliss Ready, 27.5 x 3.0"
FRONT HUB
Specialized, sealed cartridge bearings, 15x110mm spacing, 24h
REAR TIRE
Slaughter, GRID casing, Gripton compound, 2Bliss Ready, 27.5 x 2.8"
INNER TUBES
Standard, Presta valve
DRIVETRAIN
SHIFT LEVERS
SRAM GX Eagle, trigger, 12-speed
REAR DERAILLEUR
SRAM GX Eagle, 12-speed
CHAINRINGS
30T
CRANKSET
Truvativ Descendant, aluminum, Boost™ 148, 170mm crankarm, 30mm spindle
CASSETTE
SRAM GX Eagle, 12-speed, 10-50t
CHAIN
SRAM GX Eagle, 12-speed w/ PowerLock®
BOTTOM BRACKET
PF30
COCKPIT
STEM
Specialized Trail, 3D forged alloy, 4-bolt, 6-degree rise
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
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
SADDLE
Body Geometry Henge Comp, hollow Cr-Mo rails, 143mm
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
* 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 |
| BB Height, 29x2.3" | 338mm | 338mm | 338mm | 338mm |
| Stack | 618mm | 618mm | 646mm | 664mm |
| Reach | 386mm | 413mm | 431mm | 457mm |
| Head Tube Length | 125mm | 145mm | 95mm | 95mm |
| Head Tube Angle | 67° | 67° | 67° | 67° |
| BB Drop | 33mm | 33mm | 33mm | 33mm |
| Trail | 96.5mm | 96.5mm | 96.5mm | 96.5mm |
| Fork Length, Full | 560mm | 560mm | 560mm | 560mm |
| Fork Rake/Offset | 51mm | 51mm | 51mm | 51mm |
| Front Center | 687mm | 714mm | 744mm | 777mm |
| Chainstay Length | 437mm | 437mm | 437mm | 437mm |
| Wheelbase | 1122mm | 1149mm | 1179mm | 1212mm |
| Top Tube Length, Horizontal | 563mm | 590mm | 616mm | 648mm |
| Bike Standover Height | 754mm | 761mm | 770mm | 777mm |
| Seat Tube Length | 396mm | 430mm | 468mm | 523mm |
| Seat Tube Angle | 74° | 74° | 74° | 74° |
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