The 1x guide is the definitive cross-country chainguide. The 1x is the perfect guide for riders and racers wanting a lightweight single-ring front drivetrain for cross-country use. New lighter weight upper guide that is co-molded with softer material on the inside to cut chain noise. Optimized for 28-38t chainrings (most models) Compatible with 8-12 speed drivetrains Composite backplate 70g