One dropped chain is one too many. Eliminate dropped chains forever, so you can ride without interruption. The MRP 1x SL chainguide incorporates a stiff aluminum backplate and easy-to-use setup and adjustment features.

• Works ONLY with MY21+ Trek Procaliber and Supercaliber, MY20-21 Trek Top Fuel
• Clamps around BB92 bottom bracket shell
• Aluminum backplate is strong and lightweight
• Works with 30-36t round rings (and 28-34t oval rings)
• Works with 52-55mm chainlines with spacer-free chainline adjustment so adjustments can be made quickly
• Forefront 4-way, front-accessible setup and adjustment
• Pop-Up tool-free chain access for simplified installation and drivetrain maintenance

MRP 1x SL Chainguide Chain Retention System UPC: 702430208277