E*thirteen Helix Race 12S cassette

More power, optimal cadence!

E*thirteen always seeks to bring something new to the table. That's why created the Helix cassette line – to offer unparalleled cross-compatibility without sacrificing performance. As e-bikes have become more popular, was decided set out to engineer a close-ratio cassette specifically for them. Enter the Helix Race 13-52T - a new 12-speed close-ratio cassette specifically engineered for steep terrain where climbing speeds are high and descents are gravity-powered. The 13T, combined with a 32T chainring, at 85rpm cadence, will deliver speeds at or just above 32kmph/20mph, just beyond the speed-limited assistance of most e-bikes. The 52T lowest gear and closer steps help riders clean the most technical climbs with newfound ease. While the Helix R 13-52T was conceived for e-bikes, it also improves the ride experience for non-e-bike riders, allowing all riders to optimize cadence on steep climbs and let gravity do the work on descents. Like all e*thirteen Helix cassettes, the Helix Race 13-52t delivers seamless cross-compatibility with SRAM, Shimano, and TRP 12s drivetrains and improved shifting precision and wear life.

Features

• Experience the advantages of a close-ratio cassette on your next ride with the Helix Race 13-52T.
• Helix Race 13-15-17-19-22-25-28-32-36-40-45-52 vs Eagle™  10-12-14-16-18-21-24-28-32-38-44-52
• Aluminum and Steel clusters can be replaced separately to reduce service cost
• Patented two-piece aluminum/steel construction for strength, stiffness, lightweight, and durability
• Freehub Mount: XD™ and XDR™ Drivers Only
• Material: 2 aluminum cogs, 10 steel cogs. PVD finishing on Intergalactic model improves durability and wear life.
• Range: 400%
• Size: 13-52T: 13, 15, 17, 19, 22, 25, 28, 32, 36, 40, 45, 52
• Speeds: 12 Speed
• Manufacturer weight: 467 g.