The Trail SXC guide is strong enough for the all-mountain rider yet light enough for the weight conscious XC racer. The Trail SXC is compatible with the XX1 drivetrain and is perfect for riders with 1x setups looking for chain retention without the weight penalty. The adjustable upper guides accommodate rings ranging from 30T - 40T. The polyurethane sliders and aluminum backplate make for the perfect strength to weight ratio. Silent, simple, and beautiful.