Industry Nine Rear hubs are known for ultra quick engagement, a signature freewheeling sound, and their diesel proof toughness. But they'll also accommodate a variety of axle options. So you can use the same super cool rear wheel in just about any bike, no matter the axle type. The Industry Nine Rear Hub Conversion Kit will provide the necessary parts to make the conversion. Industry Nine's Rear Hub Conversion Kits are available for standard quick release, 10 x 135mm thru bolts, 12 x 135mm thru axles, and 12 x 142mm X12 thru axle systems. Each of the conversion kits supply an appropriate axle and a left side axle end cap.