MRP 1x SL Chainguide One Dropper Chain is One Too Many Your chain might not drop every day, but one time is not okay. If you're looking for some extra confidence during your rides, check out the MRP chainguides. The MRP 1x SL Chainguide eliminates dropped chains so you can ride without interruption. It has a Pop-Up feature that allows for tool-free chain access, accommodates 28-38T chainrings, is internally shaped to work with super-wide ratio cassettes and wide chainlines, and mounts with ISCG-05 tabs or BB. Features Forefront feature allows for a 4-way, front-accessible setup and adjustment Pop-Up feature for tool-free chain access Designed for 28-38T chainrings Mounting type: ISCG-05 and BBInternally shaped to accommodate super-wide ratio cassettes and wide chainlines Weight: 37-40g | Mrp | 1X Sl Chainguide Iscg-05 28-38T