MRP 1X cs Chain Guide Simple, lightweight and handles the business of keeping a chain on a chainring. The MRP 1X CS is designed for 1X drivetrains and is compatible with ISCG-05 mount styles. The Upper guide is adjustable to fit many chainlines and co-molded with a soft chain silencing material for a virtually whisper quiet performance. Features Lightweight and stiff glass composite mounting Plate Co- Molded Upper Guide Provides Full Chain Enclosure Boost compatible1 x 10, 11, 12 speed compatible28-34t range (oval compatible up to 32t)No crank or chainring removal required for installation33g | Mrp | 1X Cs Chainguide 28-34T / Iscg-05