Sram pg1170 11 speed road cassette srams 1170 11 speed cassette is constructed of light durable materials and features srams powerglide tooth profiles and shift ramps for high shifting performance with a quieter chaincassette combination this excellent cassette also sports a semi spider construction for a maximum stiffness to weight ratio a lightweight aluminum lockring and is available in three ranges to suit all your riding needs features cassette design for high shifting performance w