SIR 9 Frame & Fork

The SIR 9 is built to last and not let you down. When you're spinning up the steeps, bombing down the backcountry and grinding out the final miles as the sun sinks into the horizon, you need a bike you can trust. A comfortable, capable, hand-built made from proven, air-hardened, heat treated steel. That's right, steel. Because Steel is Real and it's fully optmized in the SIR 9.

• Hand welded air hardened Reynolds 853 Steel frame and utilizes a 12x148 axle to provide stiffness and comfort in one durable package.
• Paired with a Marzocchi Bomber Z2 120mm travel fork and room for 29x2.40" tires, and you're ready for any trail.
• Build it geared or single speed using our Single Speed Nut and Biocentric 30 bottom bracket (sold seperately).
• Each Niner frame is back by a Lifetime Warranty.
• Frame and fork combo comes with the frame, fork, Niner seat collar, derailleur hanger, Niner headset, headset spacers, YAWYD top cap and frame build accessory kit.