MRP G5 SL Single-Chainring Guide The Refreshed G5Chain guides are designed to keep your chain on the chainring while you're riding aggressively. These are best for enduro, DH, and gravity riding. The MRP G5 SL Single-Chainring Guide has a new HD2 co-molded upper guide that utilizes a softer durometer TPU material on the interior walls and ceiling to silence drivetrain chatter. It features a tracked and grooved upper guide interface that increases stiffness and eases installation, an integrated skid that protects chainrings, and the guide is oval compatible. Features Includes a standard pulley and G-slide slider block for quiet, dependable operation in muddy and dank conditions Mounting hardware included and installation is possible with just a single 4mm hex wrench Compatible with chainlines that are 50mm and wider Compatible with32-36 tooth chainring sizes | Mrp | G5 Sl Single-Chainring Guide Mini 2 Bolt Iscg-05