e*thirteen Helix Race Cassette - 12-Speed 9-52t Bronze MFPN=968-58-058 Black Anodized Model Garmin Integrated Inner Ring Compatibility:32T

e*thirteen Helix Race Cassette 12 Speed 9 52t Bronze MFPN=968 58 058 Black Anodized Model Garmin Integrated Inner Ring Compatibility:32T Black Anodized Model Garmin Integrated Handlebar System Combo Mount Bar Direct Mount Weight 50g Color Black } CNC machined 6082 aluminum body 7075 aluminum clamps Unique 240deg C shape clamps Minimal 6 bolt design U shape cradle clamp eliminates handlebar stress raisers found with traditional stems Ultra wide 64mm clamp width The proprietary 9 tooth smallest cog combined with the 52t largest cog enables the use of a smaller chainring for improved clearance lighter system weight and a lower bail out gear ratio without high gear compromise Aluminum and steel clusters can be replaced separately to reduce service cost