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When you need to blend ruggedness, efficiency, and downright nimbleness into one trail bike, it's pretty damn hard to beat the confident construction of an alloy frame like the Stumpjumper Comp Alloy 27.5.
It features an M5 alloy construction that's lightweight, durable, and plenty stiff and compliant, while SRAM's most durable one-by components have been hand-selected to ensure that you get the most performance over rugged terrain possible. Furthering this, you'll also find a FOX FLOAT Rhythm fork with 150mm of travel up front, a custom-tuned RockShox Monarch RT3 at the rear, and powerful SRAM Guide R brakes.
And when you factor in our proprietary Rx Trail Tune at the shock, plus an aggressive, trail-eating geometry that features absurdly short chainstays, a roomy top tube, a low bottom bracket, and a slacked out front end, you get a nimble trail bike that you can be confident in, season after season.
- M5 alloy Trail Chassis with Stumpjumper FSR rear end blends durability, stiffness, and light weight, while 150mm of travel Trail Geometry provide more than capable handling.
- The FOX 34 fork features 150mm of plush travel to take on big hits and bumpy terrain with supreme confidence and efficiency.
- SRAM's 11-speed GX drivetrain, with Race Face Aeffect crank, features a 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.
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Technical Specifications
FRAMESET
| FRAME | Specialized M5 Aluminum, 27.5 Trail Geometry, PF30 BB, internal cable routing, ManFu link, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 150mm of travel |
| SEAT BINDER | Alloy, 34.9mm |
SUSPENSION
| REAR SHOCK | RockShox Monarch RT, Rx Trail Tune, AUTOSAG, rebound and 2-position compression adjust, 197x48mm |
| FORK | FOX FLOAT Rhythm 34 27.5, 44mm offset, 2-position, tapered alloy steerer, 15x110mm Boost™, 150mm of travel |
WHEELS
| RIMS | Roval Traverse 27.5, hookless alloy, 29mm inner width, tubeless ready, 24/28h |
| FRONT HUB | Stout Pro 110 disc, alloy sealed cartridge bearings, 15x110mm spacing, 24h |
| REAR HUB | Specialized, sealed cartridge bearings, 12x148mm thru-axle, 28h |
| SPOKES | DT Swiss Industry, stainless, 3-cross, 2.0" |
| 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" |
| INNER TUBES | Standard, Presta valve |
DRIVETRAIN
| REAR DERAILLEUR | SRAM GX, long cage, 11-speed |
| SHIFT LEVERS | SRAM GX, trigger, 11-speed |
| CASSETTE | SRAM XG 1150, 11-speed, 10-42t |
| CHAIN | KMC X11, 11-speed w/ Missing Link™ |
| CRANKSET | Race Face Aeffect, PF30 |
| CHAINRINGS | Steel, 30T |
| BOTTOM BRACKET | Race Face PF30 |
COCKPIT
| STEM | Specialized Trail, 3D forged alloy, 4-bolt, 6-degree rise |
| HANDLEBARS | Specialized, 6061 alloy, 6-degree upsweep, 8-degree backsweep, 27mm rise, 780mm width |
| GRIPS | Specialized Sip Grip, half-waffle, S/M: regular thickness, L/XL: XL thickness |
| 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 |
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 |
* Specifications are subject to change without notice
Geometry
Stumpjumper - Geometry
| 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 | 553mm | 585mm | 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 Drop | 18mm | 18mm | 18mm | 18mm |
| Seat Tube Angle | 74° | 74° | 74° | 74° |
| Head Tube Angle | 67° | 67° | 67° | 67° |
| Seat Tube Length | 396mm | 430mm | 468mm | 523mm |
| Head Tube Length | 105mm | 115mm | 125mm | 95mm |
| Bike Standover Height | 742mm | 748mm | 762mm | 774mm |
| Fork Rake/Offset | 46mm | 46mm | 46mm | 46mm |
| Fork Length, Full | 542mm | 542mm | 542mm | 542mm |
| Trail | 104mm | 104mm | 104mm | 104mm |
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