For those of you who are running your Dark Star or Mean Jean single speed, and want the cleanest and lightest look. This replaces the drive side slider with a hanger that comes stock with the frame. To Make it Work: Dark Star - Nothing additional needed, Mean Jean - You'll need a new Thru Axle - 172mm length max, 12x1.0 thread, 17mm thread length minimum. We recommend Wheels Mfg part # RTA-12-172-1.0 -172mm - 1.0x18mm long threads -QBP # HU1829 Weight: 53g