E-Thirteen Helix Race Cassette - 12-Speed 9-52t Gray

e*thirteen Helix Race Cassette - 12-Speed 9-52t Gray. Engineered for riders who demand precision and versatility, the e*thirteen Helix Race 12-speed 9-52t cassette offers an exceptional 578% gear range, delivering smooth shifting and optimal performance across all terrains. The innovative 9-tooth smallest cog paired with the 52-tooth largest cog allows for the use of smaller chainrings, enhancing ground clearance, reducing system weight, and providing a lower bailout gear without sacrificing high-end speed.

• Seamless compatibility with Shimano, SRAM, and TRP 12-speed drivetrains ensures effortless integration
• Patented two-part design combines strength, stiffness, and lightweight construction while simplifying maintenance
• Separate aluminum and steel clusters enable cost-effective servicing by replacing only worn components
• 9-tooth high gear supports smaller chainrings for improved clearance and weight savings
• Compatible exclusively with XD™ and XDR™ drivers; note that Hope XD drivers require a separate Cassette Shim Kit due to undersized clamp location
• Extensively tested for durability and performance on both analog and e-bike systems