Let's get something clear—the Stumpjumper EVO Alloy 27.5 isn't a "normal" trail bike. It's built to get gnarly, and there's no real way around that. It has a slacked-out front-end and a longer top tube, so the EVO has heavier steering and exceptional front-end traction that begs you to do cutties and boost every lip. And with the perfect blend of responsiveness and stability that 27.5-inch wheels are known for, you'll be shredding the gnarliest lines in no time. When the goin' gets rowdy, the rowdy get goin'. What exactly is the EVO for? EVO is for the shredders—the gnarliest trail riders who live for gravity riding. Big drops, huge kickers, rocks, roots—whatever you throw at it, the Stumpjumper EVO can handle it. EVO uses the same style-specific sizing that's featured on our Demo. This sizing lets you choose the bike that fits the way you ride—not just by the seat tube measurement like with most bikes—and it narrows things down to two sizes, S2 and S3. These are longer, lower, slacker, and have seat tube and head tube heights that allow you to choose the size that best suits your style and terrain. Our other design goal 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 materials 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. - With its M5 alloy frame, 27.5 Trail EVO geometry, and 150mm of travel, the Stumpjumper EVO Alloy has been purpose-built to shred the most gravity-defying trails. - FOX FLOAT DPX2 Performance has three modes—Open, Trail, and Firm—that control large compression adjustments on-the-fly.
Going all the way back to when inspiration for the EVO lineup was still waiting to be drawn from employee bike racks packed with hot-rodded Epics sporting shorter stems, wider bars, and longer forks, Epic EVO has always been about taking the Epic's unmatched pedaling efficiency, nimble handling, and featherweight chassis and injecting an added dose of capability to make quick work of technical singletrack and demanding descents. While the Epic EVO sees a seemingly modest 20-millimeter increase in suspension travel up front over its Epic stablemate and just 10-millimeters out back, we've worked overtime to make sure it's been implemented in a way that'll have you saying "Whoa!" as soon as you hit your first stretch of singletrack. Meticulously engineered to retain as much of the Epic's standard-setting efficiency as possible, the EVO's new suspension kinematics work in concert with Rx XC Tune customized suspension front and rear to ensure you're able to make the absolute most out of every inch of travel on tap, while still offering increased anti-squat characteristics for improved pedaling efficiency. With plenty of practice at staying ahead of the curve, the Epic EVO now lays claim to the most capable iteration of our Progressive XC Geometry ever to grace an Epic. It's also more versatile than ever thanks to a new flip chip-equipped rear end that allows riders to adjust headtube angle and bottom bracket height to easily customize Epic EVO's handling characteristics. - Flip It To Rip It: Tune the ride of the Epic EVO's FACT 12m carbon frame to match your preferred handling characteristics with flip-chip simplicity that allows riders to steepen the EVO's headtube angle by half a degree while raising the bottom bracket height by six millimeters.
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