More informationToday's trails and riders demand more from their gear than ever. With that in mind, we've created a steel rear axle for 135/142mm, single-speed Neo hubs that's optimized for durability. With just a 38g weight difference over our standard 135/142mm single speed alloy shaft, our new OS option is designed to handle anything you can throw at it. High-precision centerless ground treatment ensures perfect bearing fit. Compatible with all Neo 6 bolt and Centerlock hubs.