e*thirteen Helix Race Cassette - 12-Speed 13-52t Gray Color-Galaxy Black/Red 5mm size 5mm color black

5mm size 5mm color black

Unique cutouts on the base designed to compress upon impact and quickly rebound for continuous shock absorption

Riders who are tough on wheels will enjoy greater impact resistance

Shifting under load is made possible on the XX T-Type 10-52t cassette due to a combination of X-SYNC technology and cassette mapping creating seamless shifts even during your hardest power output

e*thirteen Helix Race Cassette - 12-Speed 13-52t Gray Color-Galaxy Black/Red 5mm size 5mm color blackThe 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. Close ratio gearing cassette for improved shifts under