When you need to blend ruggedness, efficiency, and down right nimbleness into one trail bike, it's pretty damn hard to beat the confident construction of an alloy frame like the Stumpjumper Comp Alloy 650b.
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.
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.
- A RockShox Reba RL fork handles suspension up front with ease, soaking up bumpy terrain with 150mm of plush travel.
- SRAM's 11-speed GX groupset 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.
- Tech Specs
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 Fork RockShox Reba RL, tapered alloy steerer, 46mm offset, external rebound, low speed comp to lockout, 15mm Maxle® Lite, custom 15x110mm Boost™, 150mm of travel Rear Shock RockShox Monarch RT, Rx Trail Tune, AUTOSAG, rebound and 2-position compression adjust, 197x48mm 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 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 Rear Derailleur SRAM GX, long cage, 11-speed Shifters SRAM GX, trigger, 11-speed Bottom Bracket Race Face PF30 Cassette SRAM XG 1150, 11-speed, 10-42t Chain KMC X11, 11-speed w/ Missing Link™ Crankset Race Face Aeffect, PF30, Steel, 30T Pedals Specialized Platform, Cr-Mo, 9/16" spindle Front Wheel HUB: Specialized, sealed cartridge bearings, 15x110mm spacing, 24h. RIM: Roval Traverse 27.5, hookless alloy, 29mm inner width, tubeless ready, 24/28h Rear Wheel HUB: Specialized, sealed cartridge bearings, 12x148mm thru-axle, 28h. RIM: Roval Traverse 27.5, hookless alloy, 29mm inner width, tubeless ready, 24/28h Front Tyre Butcher, GRID casing, Gripton compound, 2Bliss Ready, 27.5 x 2.6" Rear Tyre Butcher, GRID casing, Gripton compound, 2Bliss Ready, 27.5 x 2.6" Inner Tubes Standard, Presta valve 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 Other SEAT BINDER: Alloy, 34.9mm
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