Finally, a hub worthy of the X0 name! Built to roll over the toughest mountain terrain, SRAM's X0 Boost Hub proves that being solid doesn’t mean being sluggish. SRAM's double time ratchet design gives you smooth 6.9-degree engagement—all while keeping everything light and steady. Super-precise Speedball bearings mean lower resistance, faster revolutions and no more time spent readjusting play. From pawl tooth to side cap, SRAM went the extra mile on the X0 Boost Hub—so you have less to worry about on the trail.
• Boost 148 x 12mm axle diameter
• Tapered aluminum axle is strong and light
• XD driver body for 11-speed compatible hubs
• Weight: 250 grams