e*thirteen Helix Race Cassette - 12-Speed 13-52t Gray MFPN=2702284 }Onyx Freehub Driver Assembly -

}Onyx Freehub Driver Assembly - HG11 Alloy

Wheels Manufacturing replacement derailleur hangers are machined in their Colorado shop to exacting tolerances to ensure your shifting gets back to where it should be

}Wheels Manufacturing Derailleur Hanger - 587

Internal Lock Size Imperial 4x8 Lock Type Key Internal Lock Size Metric 102x203mm Thickness In mm 12mm Bracket Side mount Primary Color Black

e*thirteen Helix Race Cassette - 12-Speed 13-52t Gray MFPN=2702284 }Onyx Freehub Driver Assembly -e*thirteen Helix Race Cassette 12 Speed 13 52t Gray. The e*thirteen Helix Race 12 speed 13 52t cassette features close ratio gearing specifically engineered for steep terrain where climbing time and shift frequency is high and descents are gravity driven. By placing more gears where riders spend the majority of the time they can optimize cadence and torque for improved climbing efficiency with smoother shifts under load for both analog and eBikes.