Ready to attack, easy to maneuver. With Wide Angle rim design providing superior stability, RAIL 40 can withstand the most aggressive All-Mountain / Enduro riding by setting a new benchmark for stiffness in its category. Featuring the perfect balance of strength, lightweight and width for enduro terrain, RAIL 40 delivers high-performance ride quality all the way down.
- UST Tubeless
- Convertible axles: Front Hub - QR 9x100, QR Torque Caps, 15x100, 15x100 Torque Caps, 20x110, 15x110, 15x110 Torque Caps.
- Tire Type: Tubeless Ready Clincher
Going tubeless allows you to run lower tire pressures without the added weight of a tube. Lower tire pressure has many benefits, including greater traction, lower rolling resistance over rough surfaces, and decreased risk of a puncture-related flat.
Tubeless-ready rims and tires are parts of a complete system that eliminate the need for tubes by creating an airtight chamber between the rim and tire. Liquid sealant is added to the chamber to fill small punctures and maintain air pressure while you ride.
UST (Universal Standard for Tubeless) is a specific type of tubeless system that dictates the shape of the rim and tire bead. UST rims should be paired with UST-specific tires for best results.
|Rim Material||SRAM Rail 40 Asymmetric alloy, UST - asymmetrical 2.5mm offset TAPER CORE|
|Brake Compatibility||6-Bolt Disc|
|Inner Rim Width||23mm|
|Outer Rim Width||28mm|
|Hub||SRAM 40, Speedball bearings|
|Spokes||Solo Spoke—double butted spokes, Straight Pull, Round|
|Axle||110 x 15mm|
|Valve Type||Medium Presta Valve 41-55mm|
* Subject to change without notice.