No need to fret—we haven’t forgotten about all you alloy fans out there. In fact, the new Stumpjumper Comp Alloy 29 may be the most radically designed alloy bike ever made. For real, though. And with new tube shapes and an asymmetrical design, it's going to exceed all of your expectations of how a trail bike should ride.
Our design goal for the new Stumpjumper was simple—build the ultimate trail bike, one that feels telepathic. And it turns out that this feeling all comes down to stiffness. Think of it this way: when the frame's telling your hands one thing and your feet another, your brain gets confused with the imbalance and the bike feels unstable. In order to fix this, we had to get to work on dialing-in the material and shapes.
We continued down the suspension path with a custom Rx Trail Tune on both the fork and rear shock. Suspension performance is highly dependent on frame, wheel, and rider size, so we use our Rx Tune to get each bike to land in the middle of the adjustment spectrum, and this gives you the biggest possible range to fine-tune your ride. Another focal point of the tune was matching the suspension characteristics between wheel sizes—we developed a specific Rx Tune for each platform. So, no matter what wheel size you prefer, you’ll get perfectly linear suspension.
Steps were also taken to make this bike easy to live with. Threaded bottom brackets make a triumphant return, and we made room for up to a 3.0"" tire. You're also free to run whatever aftermarket rear shock you want, since we're using standard metric shocks. And customization is furthered with a Flip Chip that lets you to dial-in your Stumpy to your riding style. Switch it from High to Low and it drops your bottom bracket 6mm and slackens the head tube by half-a-degree. Little details also jump out to surprise you, like a newly designed ribbed chainstay protector that makes chain slap a thing of the past and nearly silences the drivetrain.
The build here is no-nonsense with a focus on dependable, high-performing parts, like a Shimano SLX drivetrain with RaceFace cranks, Shimano SLX disc brakes, FOX front and rear suspension, and Roval Traverse 29 alloy wheels.
We have been lucky enough to get out and have a first initial test.
We were able to get out and test what this bike is really like out on the trails. The first thing we noted was the fit. You felt like you were in the bike, part of it. This gave us bags of confidence to push the bike faster and faster. The larger 2.6" tyres gave the bike a solid platform to really push into corners and get your flow on out on the ride. Everyone asks "but does it go uphill.." Our answer is YES and yes again. The FSR suspension linkage keeps a stable platform that means when you stop on those pedals to clear a technical accent you get all the grip and power you need. And when you point it back downhill its grin inspiring with a longer top tube slacker head angle and suspension characteristics that we all want to see, small bump sensitivity, fluid midstroke and a progressive ramp for the big hits.
This bike is a trail ripper!
- The completely redesigned alloy Stumpjumper frame features an M5 alloy front- and rear-end, an asymmetrical design, and our 29 Trail Geometry, so it's just the right amount of both capable and comfortable.
- The FOX DPS Performance rear shock features our Rx Trail Tune, ensuring that no matter the wheel or frame size, your bike is dialed-in perfectly.
- A FOX 34 Rhythm fork handles suspension duties up front, with stiff stanchions and plenty of adjustability.
- Tech Specs
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, 140mm of travel Fork FOX FLOAT Rhythm 34, GRIP Damper, 51mm 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, 210x50mm 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 Shimano SLX, hydraulic disc, resin pads, 200mm rotor Rear Brake Shimano SLX, Hydraulic Disc, Resin Pad Rear Derailleur Shimano XT, Shadow Plus, GS cage, 11-speed Shifters Shimano SLX, 11-speed Bottom Bracket Threaded BB, 24mm spindle Cassette Shimano SLX, 11-speed, 11-46t Chain KMC X11, 11-speed w/ Missing Link™ Crankset RaceFace Aeffect, 24mm spindle, 170mm crankarm, 30T Pedals Specialized Dirt Front Wheel Specialized, sealed cartridge bearings, 15x110mm spacing, 28h, Roval Traverse 29, hookless alloy, 29mm inner width, tubeless ready, 28h Rear Wheel Specialized, sealed cartridge bearings, 12x148mm thru-axle, 28h, Roval Traverse 29, hookless alloy, 29mm inner width, tubeless ready, 28h Front Tyre Butcher, GRID casing, GRIPTON® compound, 2Bliss Ready, 29x2.6" Rear Tyre Purgatory, GRID casing, GRIPTON® compound, 2Bliss ready, 29 x2.6" Inner Tubes Presta, 40mm valve Saddle Body Geometry Phenom Comp, Adaptive Edge design, 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/XL: 150mm of travel
Customer ReviewsWrite a Review
This is a brand new 2019 bike and reviews for it are sparse to say the least, I have now ridden 100miles on this and am in a position to leave a reasonably accurate review of my experiences.
The good: The frame is very strong, hardly any flex, it's agile despite being a 29er, it jumps very well and is very quiet, hardly any chain slap, seat is reasonably comfortable, the SLX drive train is quick and precise with no faffing. It is very FAST!
The bad: NOTHING TO DECLARE
I have ridden it in Puddletown forest, a few rides across the Purbecks and a road commute to work and on every ride it makes me smile more. The bike pedals very well and is very easy to maintain a good pace.
I would highly recommend this bike to anyone, and tbh everyone. My personal belief is that this is certainly going to be in the running for trail bike of the year as it is simply stunning (Posted on 24/06/2018)
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