You don’t win by being the lightest. Or the stiffest. Or the toughest. You win by being the fastest. And that takes a wheel designed specifically for the modern mountain biker. SRAM starts with the demands of the terrain and work forward from there — carefully balancing each wheel’s design around five key attributes: weight, inertia, engagement, stiffness and durability. No matter where you ride, SRAM wheels will take you further. RISE higher. ROAM farther. RAIL harder.
Ready to attack, easy to maneuver. Built for aggressive All-Mountain descents, RAIL wheels balance the strength and stiffness you need with the lightness to climb quickly back to the top.
An alloy rim that does what other alloy rims can’t. With WIDE ANGLE rim design providing superior stability, RAIL 50 can withstand the most aggressive All-Mountain/Enduro riding while setting a new benchmark for lightweight in the category. Featuring the perfect balance of strength, stiffness and width for All-Mountain/Enduro terrain, RAIL 50 delivers best-in-class ride quality all the way down.
Double-Decker™. Stacked in your favor. This hub shell design takes straight pull spoke slots and stacks them two-by-two—distributing force perfectly around the wheel’s SOLO SPOKE design. The resulting wheel dish is wider, maximizing lateral stiffness while retaining some frontal compliance.
Side Swap™. Switching axles has never been easier. Threadless side caps can be installed and replaced by hand—no tools necessary. SIDE SWAP SYMMETRICAL side caps refuse to take sides. The left side cap is identical to the right one. No need to figure out where each cap is going.
Solo Spoke™. With SOLO SPOKE, you’re never wrong. SRAM wheel design eliminates the need for different spoke lengths—one size fits the entire wheel. This identical-length design means no longer wondering whether you have the right front/rear/drive-side/nondrive-side spoke handy.
Front + Rear + Drive-Side + Nondrive-Side = 1 Spoke.
Taper Core™. Strong in the right places. The sidewalls of SRAM rims are reinforced along the wings to withstand major impact. But the sidewalls then taper in along the center—reducing overall mass. The result is a very light rim with excellent dent resistance.
UST Tubeless. No tube, no-brainer. UST TUBELESS rims feature hooked edges designed to seal with UST compatible tires. The result is improved traction and control, less inertia and fewer flats.
Wide Angle™. Take corners as fast as you want. SRAM wheels have a wider rim profile without significant added mass. This profile holds tire shape better, preventing tire roll and giving you superior comfort and traction around corners. 19mm XC Racing, 21mm Trail, 23mm All-Mountain.
XD Driver Body™. XD is a new cassette driver body design that allows the use of a 10 tooth small cog and provides an improved interface with the cassette.