e*thirteen Helix Race 12-Speed 13-52T Cassette - Intergalactic Size:13-52 textured rubber base holds on

textured rubber base holds on tight to smooth surfaces

With a wheel so dialed in

So grab a brew and nerd out on the design deep dive below that we think makes our Monarch grips the new Kings of Control

From speedlock to caliper 75cm

Ultra-distance racing

e*thirteen Helix Race 12-Speed 13-52T Cassette - Intergalactic Size:13-52 textured rubber base holds onAt e*thirteen, we're always striving to bring something new to the table. That's why we created the Helix cassette line to offer unparalleled cross compatibility without sacrificing performance. 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 12 speed close ratio cassette specifically engineered for steep terrain where climbing speeds are high and descents are