Mountain biking has come a long way since the Stumpjumper first debuted in 1981, but one thing's stayed the same for decades: The Stumpjumper FSR is the ultimate trail bike. And this year, it solidifies its position as the best handling and most efficient trail bike in history with revolutionary new technology like our proprietary Rx Trail shock tune, never been done before, fully integrated SWAT technology, 650b and 29er options, the shortest chainstays of any trail bike out there, and an even slacker, trail-eating geometry. Add it all up, and you have a bike that's ready for anything that the trail can throw at it.
To create the perfect trail experience, you need a little of everything. Climbing, descending, motoring over root and rock sections—the geometry needs to lend itself to doing it all. Our Trail Geometry was developed with this knowledge at the forefront of the design, and year after year, we keep perfecting on perfection. It all starts with handling, which is why you'll find roomy top tubes and slack head tubes that inspire confidence over any terrain. And to ensure maximum efficiency, our Trail Geometry always features the short chainstays to enhance power transfer, while also keeping the rear end nice and tight for nimble handling.
FACT CARBON FSR FRAME
Whether you're going up or down the trail, it's no secret that lighter is faster. That's why our engineers obsessively work at refining our carbon frames to shave every non-essential gram. At the same time, every tube's shape and location is scrutinized, resulting in a sleek, stronger design that's optimized for utility. In terms of efficiency, it also allows for internal cable routing, massive bottom bracket shells, 142mm or greater rear hub spacing, and a tapered head tube. And for handling, FACT IS carbon frames permit a FSR 6-Pack or Concentric shock linkage for the perfect pivot location and suspension movement. In real-world terms, this equates to smoother, more responsive travel for an unparalleled ride quality.
The irony of taping tubes and nutrition to your dream carbon rig isn't lost on us. But where we saw a problem, we made a solution. Our SWAT compatible frames are a revolution in utility. Featured models include everything you'd need for on-the-fly trail repairs: Our integrated chain breaker in the top cap, a strategically located multi-tool in the top tube of the frame, and our new SWAT Door that opens to a cubby inside the carbon frame. This new technology allows the stowage of a tube, pump, tool, and much more. Say goodbye to unsightly packing hacks and hello to putting everything need right where you want it.
For over 20 years, we've been continually refining our FSR Suspension platform to make sure that you get the most comfort, control, and efficiency possible out of your ride. FSR features strategically placed pivot points that effectively decouple the suspension from drivetrain and braking forces, resulting in a fully active and fully independent suspension. In other words, bob and squat are eliminated, so you'll get more power out of your pedaling and more traction on the descents.
RX TRAIL TUNE
While most companies simply use a shock with an "off the shelf" tune, we invest the time to custom-tune our shocks. With our Rx Trail Tune, you get a shock that's tailored to the trail riding experience, thus the "Rx" acronym for "recommended experience." To do this, our suspension team worked hand-in-hand with our shock partners to tweak the compression ratios in order to complement hard trail riding, which means that you're guaranteed a plush, efficient ride quality that utilizes every millimeter of travel. It's how trail riding is supposed to feel.