e*thirteen Helix Race Cassette - 12-Speed 13-52t Gray MFPN=101183 EA90 alloy crank arms are

EA90 alloy crank arms are lightweight and feature a matte black anodized finish

WINDY MOUNTAIN

Includes 4-piece spacer kit and 2xM10 bolts with serrated caps

}RockShox Bottomless Tokens and Air Cap Kit 32mm Solo Air Reba / SID / Revelation / RS-1 / Bluto / Argyle RCT

SRX hubs are easily serviceable and offer 90 points of engagement

e*thirteen Helix Race Cassette - 12-Speed 13-52t Gray MFPN=101183 EA90 alloy crank arms aree*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.