e*thirteen Helix Race Cassette - 12-Speed 13-52t Gray MFPN=101183 DWR coated ripstop panels and

DWR coated ripstop panels and snap chest pockets

Wolf Tooth Direct Mount Chainrings for Trek TQ E-Bike Motors are compatible with all Boost and Super Boost bikes that use the Trek TQ Motor

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

Shimano Alfine S501 1x Chainrings

e*thirteen Helix Race Cassette - 12-Speed 13-52t Gray MFPN=101183 DWR coated ripstop panels ande*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.