e*thirteen Helix Race 12 Speed 13-52T E-Bike Cassette

e*thirteen turned the bike world on its head with the introduction of the 9t sprocket on the original TRS cassette in 2015, and they have never looked back! 

The newest generation of e*thirteen Helix cassettes deliver more range than the competition with unmatched cross-compatibility for flawless shifting performance with SRAM™,  Shimano™ and TRP drivetrains. Lighter in weight, they also enable you to shave grams by stepping down a chainring size. 

Our cassettes also maximize service life by enabling you to replace the steel or aluminum parts separately; and they come in a rainbow of colors to match your style! Reduce weight, increase range, personalize your bike, and experience freedom of choice with e*thirteen Helix cassettes.

PRODUCT SPEC Compatibility - Please reference our hub compatibility article to ensure the e*thirteen cassette will work on the hub you have before purchase.
Freehub Mount - XD™ and XDR™ Drivers Only
*Hope XD drivers are undersized at the clamp location and require a Cassette Shim Kit 

Options include:

----------------------------------------------------------------------------------------

HELIX RACE 12-SPEED 13-52T CASSETTE

As e-bikes have become more popular, we 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, in combination with a 32T chainring, at 85rpm cadence, will deliver speeds at or just above 32kmph/20mph, which is just beyond the speed-limited assistance of most e-bikes. The new 52T lowest gear and closer steps help riders clean the most technical climbs with newfound ease.

While the Helix R 13-52T was conceived with e-bikes in mind, it improves the ride experience for non-e-bike riders, too, allowing them to optimize their 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, as well as improved shifting precision and wear life. Weighing in at 467g, the cogs are reinforced for high-powered e-bikes, yet light enough for weight-optimized trail bikes.

Experience the advantages of a close-ratio cassette on your next ride, with the Helix R 13-52T. 

PRODUCT SPEC
Material - 2 aluminum cogs, 10 steel cogs. PVD finishing on Intergalactic model improves durability and wear life.
Size - 13-52T: 13, 15, 17, 19, 22, 25, 28, 32, 36, 40, 45, 52
Speeds - 12 Speed

Aluminium Cluster: 45-52T
Steel Cluster: 13-15-17-19-22-25-28-32-36 - 40T
Weight - 467g
Colours - Grey/Nickel, Orange/Nickel, Purple/Nickel, Bronze/Nickel & Intergalactic/Nickel