Stumpjumper Comp Alloy 27.5
Manufacturer Description
The Stumpjumper Comp Alloy 27.5 combines the balanced stiffness and incredible precision of our sidearm frame design with a 12-speed SRAM NX Eagle drivetrain. The end result is a bike that outperforms its price tag by a wide margin. THE ULTIMATE TRAIL BIKE The innovative sidearm frame design makes a lighter, better-handling bike. By directly connecting all three mounting points of the rear-end and shock to the frame, we’ve increased both stiffness and performance over bumps. PERFECTLY-BALANCED SUSPENSION Our in-house suspension-tuning team develops custom shock tunes, perfectly paired to each bike’s kinematics. We call this Rx Tune and while it’s not the easy way to build a suspension bike, it’s worth it. You feel Rx Tune as perfectly-balanced suspension. Total control. MASSIVE BANG FOR YOUR BUCK • Sidearm frame design offers balanced stiffness and precise handling. • FOX DPS Performance rear shock delivers perfectly-dialed rear suspension. • NX Eagle 12-speed drivetrain gives you single-ring simplicity and gearing to spare.
Build Kit
| Frameset | |
|---|---|
| Frame | M5 alloy chassis and rear-end, asymmetrical design, 27.5 Trail Geometry, threaded BB, fully enclosed internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 150mm of travel |
| Fork | FOX FLOAT RHYTHM, 34, GRIP damper, 44mm offset, 2-position sweep adjust, 15x110mm, tapered alloy steerer, 150mm of travel |
| Rear Shock | FOX FLOAT DPS Performance, Rx Trail Tune, rebound and 3-position compression adjust, 210x52.5mm |
| Cockpit | |
| Grips | Specialized Sip grip, half-waffle, S/M: regular thickness, L/XL: XL thickness |
| Handlebars | Specialized Trail, 6061 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 31.8mm clamp, XS 720mm, S-XL 750mm, |
| Saddle | Body Geometry Phenom Comp, hollow Cr-Mo rails, 143mm |
| Seatpost | X-Fusion Manic, infinite adjustable, two-bolt head, bottom mount cable routing, remote SRL LE lever, 34.9mm, S: 125mm, M/L: 150mm, XL: 170mm |
| Stem | Specialized Trail, 3D-forged alloy, 4-bolt, 6-degree rise |
| Brakes | |
| Levers | - |
| Front Brakes | SRAM Guide R, hydraulic disc, organic pads, Guide S4 4-piston caliper, 200mm |
| Rear Brakes | SRAM Guide R, hydraulic disc, organic pads, Guide S4 4-piston caliper, 180mm |
| Drivetrain | |
| Bottom Bracket | SRAM DUB, BSA 73mm, Threaded |
| Cassette | SRAM NX Eagle, 12-speed, 11-50t |
| Chain | - |
| Chain Rings | Steel, 30T |
| Chrankset | SRAM NX Eagle, DUB, 170mm |
| Front Derailleur | - |
| Rear Derailleur | SRAM NX Eagle, 12-speed |
| Pedals | - |
| Shifters | SRAM NX Eagle, trigger, 12-speed |
| Wheels | |
| Front Hub | Specialized, sealed cartridge bearings, 15x110mm spacing, 28h |
| Rear Hub | Specialized, sealed cartridge bearings, 12x148mm thru-axle, 32h |
| Spokes | DT Swiss Industry |
| Front Tire | Butcher, GRID casing, GRIPTON® compound, 2Bliss Ready, 27.5 x 2.6 |
| Rear Tire | Eliminator, GRID TRAIL casing, GRIPTON® compound, 2Bliss Ready, 27.5 x 2.6 |
| Tubes | Presta, 40mm valve |
| Front Wheel | Roval Traverse 27.5, hookless alloy, 30mm inner width, tubeless ready |
| Rear Wheel | Roval Traverse 27.5, hookless alloy, 30mm inner width, tubeless ready |
Geometry
| S | M | L | XL | ||
|---|---|---|---|---|---|
| BB Drop | - | - | - | - | |
| BB Height | - | - | - | - | |
| Chainstay Length | - | - | - | - | |
| Crank Length | 170 | 170 | 170 | 170 | |
| Fork Length | - | - | - | - | |
| Fork Rake Offset | 46mm | 46mm | 46mm | 46mm | 46mm |
| Front Center | - | - | - | - | |
| Handlebar Width | 780mm | 780mm | 780mm | 780mm | |
| Headtube Angle | - | - | - | - | |
| Headtube Length | - | - | - | - | |
| Reach | 405mm | 415mm | 435mm | 455mm | 480mm |
| Saddle Width | 143mm | 143mm | 143mm | 143mm | |
| Seatpost Length | 375 | 438 | 438 | 438 | |
| Seat Tube Angle | - | - | - | - | |
| Seat Tube Length | - | - | - | - | |
| Stack | 581mm | 592mm | 596mm | 623mm | 637mm |
| Standover Height | - | - | - | - | |
| Stem Length | 45 | 45 | 45 | 45 | |
| Top Tube Length | - | - | - | - | |
| Trail | 103mm | 112mm | 112mm | 112mm | 112mm |
| Wheelbase | 1127mm | 1157mm | 1179mm | 1212mm | 1243mm |