- DESCRIPTION
- FEATURES
- SPECIFICATION
- GEOMETRY
- BUYING A BIKE
Stumpjumper 15 Alloy is here to obliterate every trade-off in the trail game. Devour bumps like a big bike? Check. Short-travel control, playfulness, and efficiency? Double check. How about a heaping helping of personalization to make it perfect for the only rider who really matters—you? Check, check, check.
BREAKTHROUGH CAPABILITY: GENIE Shock Technology combines a poppy, playful ride with a bottomless DH feel.
ULTIMATE CONTROL: Measurably better traction than “Bike of the Year” Stumpjumper EVO.
UNMATCHED PERSONALIZATION: Six-way geometry adjustment, mixed wheel or 29”, tunable spring curve, and more.
GENIE—The Magic Carpet Ride: The biggest innovation on the Stumpjumper 15 Alloy is GENIE. This patent-pending air spring technology we invented grants every trail rider three wishes: the maximum grip and traction of a coil spring feel, better bottom-out prevention than a standard air spring, and the ability to tune mid-stroke and end-stroke support independently.
ILLUMINATING GENIE: GENIE combines the control-enhancing linear spring rate of a coil spring through the “bump zone” with the progressive spring rate of an air spring at the end of the stroke to avoid bottom-outs. Truly, it's the best of both worlds – coil and air – with extra tunability. Say goodbye to compromises and hello to the future of riding.
WHAT BUMP?: With 16.3% better bump force management than a traditional air-sprung shock, GENIE makes the Stumpjumper 15 Alloy ride like a bike with more travel. For example, the Stumpjumper 15 Alloy (with 145 mm rear wheel travel) and our Enduro (170 mm travel) both use 101 mm of travel to absorb a 1080 N bump force.
TRACTION GALORE: Extensive field testing proves that Stumpjumper 15 Alloy with GENIE delivers 57% better traction than a standard air-sprung shock because GENIE technology gives you supple, coil-like performance, which keeps the wheel in contact with the ground a greater percent of the time than a typical air spring would.
BYE, BYE, BOTTOM-OUTS: 39% fewer bottom-outs than a standard air spring. During big hit events, you benefit from the rising rate in the last 30% of the GENIE stroke. Because of this two-stage, pronounced rising rate, GENIE reduces the frequency and severity of bottom-outs.
HONED GEOMETRY: This bike’s geometry delivers big bike capability when you need it, a nimble feel in tight sections, and lively, efficient climbing manners. The generous cockpit centers you on the bike, optimizing traction and corner control. The low bottom bracket, slack head tube angle, and optimized fork offset keep things stable in the rough.
RIDE YOUR WAY: The Stumpjumper 15 Alloy seamlessly integrates benchmark geo adjustability, making it the most personalizable trail bike ever. Six distinct geometry settings allow you to hone performance for any style, any terrain. The head angle and bottom bracket height can be fine-tuned for stability or clearance.
WHEEL CHOICE: With our aftermarket shock links, you can choose between big wheels front and rear or mix things up with a 27.5” rear for a more responsive and playful ride. No matter what you choose, geometry is unaffected.
CARRY IT ALL: SWAT on Stumpjumper 15 Alloy elevates downtube storage, an innovation we pioneered.
MORE RELENTLESS THAN YOU: Our full-suspension bikes are built to be relentless, designed to endure years of hard riding, and backed by the best support and policies to keep you on the trail. Our unbeatable lifetime, no-questions-asked replacement suspension pivot bearings to the original owner is just one way we've got you covered.
- All-new M5 alloy frame with SWAT door integration
- Robust Specialized alloy wheels with sealed cartridge bearings
- Ride Dynamics tuned FOX FLOAT Performance with Specialized GENIE patent-pending air spring technology provides maximum grip and traction found in a linear coil spring, bottom-out prevention found in a progressive air spring, and the ability to tune mid-stroke and end-stroke support independently. 2-position open and firm damper adjustments.
- Eat up the chunkiest trails with the FOX FLOAT 36 Rhythm fork with GRIP damper
- Performance-focused and durable Shimano SLX drivetrain
- Big stopping power from TRP Trail EVO 4-piston brakes
- Trustworthy time and time again X-Fusion Manic dropper post
- Lifetime replacement of suspension pivot bearings to the original owner
Frameset FRAME M5 Alloy chassis and rear-end, Trail Geometry, SWAT™ Door integration, head tube angle adjustment, threaded BB, internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, SRAM UDH compatible, 145mm of travel SWAT SWAT internal downtube storage SEAT BINDER Alloy, 38.6mm Suspension REAR SHOCK FOX FLOAT Performance with Specialized GENIE Shock Tech, Ride Dynamics Trail Tune, 2-position lever w/ LSR adjustment, S1:210x52.5mm, S2-S6:210x55mm FORK FOX FLOAT 36 Rhythm, GRIP damper, two position Sweep adjustment, 15x110mm QR axle, 44mm offset, S1:140mm of travel, S2-S6:150mm of travel Cockpit SEATPOST X-Fusion Manic, infinite adjustable, two-bolt head, bottom mount cable routing, remote SLR LE lever, 34.9, S1: 125mm, S2: 150mm, S3: 170mm, S4-S6: 190mm STEM Alloy Trail Stem, 35mm bar bore SADDLE Bridge Comp, Hollow Cr-mo rails, S1-S2: 155mm, S3-S6: 143mm GRIPS Specialized Trail Grips HANDLEBARS Specialized, 6000 series alloy, 6-degree upsweep, 8-degree backsweep. S1-S2: 780 width, 20mm rise: S3-S4: 800 width, 30mm rise: S5-S6: 800 width, 40mm rise Brakes FRONT BRAKE TRP Trail EVO, 4-piston caliper, hydraulic disc, 203mm REAR BRAKE TRP Trail EVO, 4-piston caliper, hydraulic disc, S1-S2: 180mm, S3-S6: 203mm Drivetrain SHIFT LEVERS Shimano SLX, M7100, 12spd REAR DERAILLEUR Shimano SLX, M7100, SGS, 12-speed CASSETTE Shimano SLX, CS-M7100, 12-speed, 10-51t CHAIN Shimano SLX, M7100, 12-speed CRANKSET Shimano SLX, M7120, 32T ring, 55mm chainline, S1-S3:165mm, S4-S6: 170mm BOTTOM BRACKET Shimano, BB-MT801, Threaded Wheels & Tires RIMS Specialized, hookless alloy, 30mm inner width, tubeless ready, Front: 29, Rear: S1-S2: 27.5, S3- S6: 29 FRONT HUB Alloy, sealed cartridge bearings, 15x110mm thru-axle, 28h REAR HUB Alloy, sealed cartridge bearings, 12x148mm thru-axle, 28h SPOKES DT Swiss Industry FRONT TIRE Butcher, GRID TRAIL casing, GRIPTON® T9 compound, 2Bliss Ready, 29x2.3" REAR TIRE Eliminator, GRID TRAIL casing, GRIPTON® T7 compound, 2Bliss Ready, S1-S2: 27.5x2.3, S3- S6: 29x2.3" INNER TUBES Standard, Presta valve Product Details PRODUCT ID 221397 Weight WEIGHT 16.17 kg (35 lb, 10.4 oz) WEIGHT SIZE S4 * Specifications are subject to change without notice
S1 S2 S3 S4 S5 S6 Crank Length 165 165 165 170 170 170 Handlebar Width 780 780 800 800 800 800 Stem Length 40 40 40 40 40 40 Saddle Width 155 155 143 143 143 143 Seatpost Length 125 150 170 190 190 190 Stack 608 618 627 640 654 667 Reach 400 425 450 475 500 530 Headtube Length 95 100 110 125 140 155 Headtube Angle 64.5 64.5 64.5 64.5 64.5 64.5 BB Height 334 337 337 337 337 337 BB Drop 41 38 38 38 38 38 Trail 129 130 130 130 130 130 Fork Length (full) 551 561 561 561 561 561 Fork Rake/Offset 44 44 44 44 44 44 Front Center 720 751 780 812 843 879 Chainstay Length 430 432 435 435 445 445 Wheelbase 1149 1181 1213 1244 1285 1322 Top-tube Length (horizontal) 541 573 595 624 647 677 Bike Standover Height 738 751 745 745 745 751 Seat Tube Length 385 385 405 425 445 465 Seat Tube Angle 78 77 77 76.5 76.5 76.5 Saddle Height for Effective ST Angle 645 690 735 780 825 870 Max Seatpost Insertion 245 245 255 255 285 285 Min Seatpost Insertion 80 80 80 80 80 80 All bikes purchased from iRIDE will have been pre-assembled by our mechanics and test ridden. You will also receive a multi point checklist of all the safety checks and bike build elements we work through to ensure you bike is correctly assembled, and then tested so that it runs as it should. Bikes being sent to a customer who is unable to collect it from iRIDE, will have it boxed, wheels, saddle and bars generally off and re-packaged.
The delivery of bikes will be organized once a freight fee can be determined based on weight and delivery location.
Assembly should take no longer than 10-20 minutes. It is recommended that a skilled mechanic assemble, or check the bike. If possible your local bike shop is likely best placed to do this from a safety perspective to ensure all is as it should be. If a rider is having any issues we can hook up an online video chat, or talk over the phone. If this service is required email us at workshop@iride.net.nz to organise a time that suits all parties.