MTB 12 Speed 9-50T Bike Cassette 12s CNC Bicycle Freewheel For Sram XD Sprocket
Material : High strength steel (9-42T) and 7075 Alloy(50T). RYET MTB 12 Speed 9-50T L XD Cassette Black. XD Compatible. Bicycle Cassette. Our 12speed 9-50T L cassette has an improved structure for smoother shifting.