The Specialized Stumpjumper was the first mass produced mountain bike back in 1981 and it's been breaking now ground ever since. The 2021 Stumpjumper series sets a new benchmark for full sus trail bikes - it's suitable for every type or rider on every type of trail and most of this comes from its geometry. The S-sizing mostly refers to the length of top tube. The S-Sizing geometry of the new Stumpjumper hits the progressive sweet spot. It’s long, low and slack, with a short offset fork and a steeper seat tube angle. These numbers combine to make your ride more stable, more carvealicious, more comfortable climbing, more better everywhere. Rider-First Engineered frames use a size-specific approach to ride characteristics that ensures benchmark handling and flawless performance, regardless of frame or rider size. Whether you’re a jump-happy grom riding an S1, or a DH-fiend giant in need of the lengthy S6, you’ll experience the same ride traits – rail-sharp cornering and balanced front and rear stiffness – at the lightest-possible weight. The Alloy is the base level of the Stumpjumper 2021 series and you still get an incredible bike bang for your buck. Outfitted with a no-fuss SRAM SX 12-speed groupset, 29 Trail Geometry, horst pivot BB adjustment, 140mm of front end travel on a Rockshox fork and 200/180mm hydraulic disc brakes, the Stumpjumper Alloy is your all-access pass for trail adventure.