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Die-hard aluminum fans rejoice. Our snappy and nimble Stumpjumper ST is available in M5 alloy. It’s perfect for riders seeking a quick and capable all-rounder. The Stumpjumper ST Comp Alloy 29 ups the ante with full Fox suspension and reliable Shimano drivetrain.
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. End result? Total control.
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.
A NO-NONSENSE BUILD
• Sidearm frame design offers balanced stiffness and precise handling.
• The FOX DPS Performance rear shock equals perfectly dialed rear-suspension.
• FOX FLOAT Rhythm 34 fork with 130mm of travel offers great adjustabiity.
Technical Specifications
| FRAME | M5 alloy chassis and rear end, asymmetrical design, 29 Trail Geometry, threaded BB, fully enclosed internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 120mm of travel |
| SEAT BINDER | Specialized bolt-type, alloy, 38.6mm |
| REAR SHOCK | FOX FLOAT DPS Performance, Rx Trail Tune, rebound and 3-position compression adjust, 190x42.5MM |
| FORK | FOX FLOAT RHYTHM, 34, GRIP damper, 51mm offset, 2-position sweep adjust, 15x110mm, tapered alloy steerer, 130mm of travel |
| STEM | Specialized Trail, 3D-forged alloy, 4-bolt, 6-degree rise |
| HANDLEBARS | Specialized Trail, 6061 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 31.8mm clamp, XS 720mm, S-XL 750mm, |
| GRIPS | Specialized Sip grip, half-waffle, S/M: regular thickness, L/XL: XL thickness |
| 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 |
| FRONT BRAKE | Shimano MT-501, hydraulic disc, resin pad |
| REAR BRAKE | Shimano MT-501, hydraulic disc, resin pad |
| REAR DERAILLEUR | Shimano SLX, Shadow Plus, 11-speed |
| SHIFT LEVERS | Shimano SLX, 11-speed |
| CASSETTE | Shimano SLX, 11-speed, 11-46t |
| CHAIN | KMC X11, 11-speed w/ Missing Link™ |
| CRANKSET | Race Face Ride, 170mm |
| CHAINRINGS | Steel, 30T |
| BOTTOM BRACKET | Threaded BB, 24mm spindle |
| RIMS | Double-wall alloy, 27mm internal width |
| FRONT HUB | Specialized, sealed cartridge bearings, 15x110mm thru-axle, 32h |
| REAR HUB | Specialized, sealed cartridge bearings, 12x148mm thru-axle, 32h |
| SPOKES | Stainless, 14g |
| FRONT TIRE | Eliminator, GRID TRAIL casing, GRIPTON® compound, 2Bliss Ready, 29x2.3" |
| REAR TIRE | Purgatory, GRID Casing, GRIPTON® compound, 29x2.3" |
| INNER TUBES | Standard, Presta valve |
Geometry
Stumpjumper ST - Geometry
| S | M | L | XL | |
|---|---|---|---|---|
| Crank Length | 170 | 170 | 170 | 170 |
| Stem Length | 45 | 45 | 45 | 45 |
| Seatpost Length | 375 | 438 | 438 | 478 |
| Saddle Width | 143mm | 143mm | 143mm | 143mm |
| Handlebar Width | 780mm | 780mm | 780mm | 780mm |
| Reach | 415mm | 435mm | 455mm | |
| Top Tube Length, Horizontal | 570mm | 593mm | 624mm | |
| Stack | 612mm | 612mm | 635mm | |
| Wheelbase | 1143mm | 1163mm | 1192mm | |
| Chainstay Length | 437mm | 437mm | 437mm | |
| Front Center | 708mm | 728mm | 758mm | |
| BB Drop | 39mm | 39mm | 39mm | |
| BB Height | 333mm | 333mm | 333mm | |
| Seat Tube Angle | 75.8° | 75.5° | 75.1° | |
| Head Tube Angle | 67.5° | 67.5° | 67.5° | |
| Seat Tube Length | 380mm | 410mm | 455mm | |
| Head Tube Length | 100mm | 100mm | 125mm | |
| Bike Standover Height | 750mm | 756mm | 769mm | |
| Fork Rake/Offset | 51mm | 51mm | 51mm | |
| Fork Length, Full | 540mm | 540mm | 540mm | |
| Trail | 99mm | 99mm | 99mm |