Sram pg970 9 speed mtb cassette downhill
Sram pg970 9 speed mtb cassette downhillnarrow ratio cassette for the downhill fanatics in the crowd steel cogs for strength and durability finer gear selection for precision course tuning fast smooth upshifts and downshifts sram pg970 cassette technologiespowerglide ii cassette technology optimized for off road more reliable more durable better performing thanks to an optimal tooth profile and shift ramp design for quick and positive index shiftingsram pg970 cassette specificationt