e*thirteen Helix Race Cassette - 12-Speed 9-52t Intergalactic CheckoutTitle=DT Swiss ProLock ProHead Brass Nipples flutter-free and skin friendly Floating

flutter-free and skin friendly Floating padding Ponytail compatible Sunglasses docks Rear light fixation point New Zoom Pro retention system

Designed to deliver crisp and accurate front shifts

Air pressure compensation valve

Sapim CX Ray spokes laced to the ZM2 SL hub with XD Driver and 66 points of engagement

} Compact and super-efficient

e*thirteen Helix Race Cassette - 12-Speed 9-52t Intergalactic CheckoutTitle=DT Swiss ProLock ProHead Brass Nipples flutter-free and skin friendly FloatingThe e*thriteen Helix Race 12 speed 9 52t cassette is engineered to deliver precision shifting performance with an industry leading 578% gear range. 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. Seamless cross compatibility with Shimano SRAM and TRP 12 speed drivetrains Patented 2