Description
21 speed Conversion kits for Infinity Boss.three 7 speed hybrid bicycles. Includes: Shimano EF-41 7 speed Right / 3 Speed Left shifters and shifter housing & cables, Shimano FD-TZ31 front 3 speed Derailleur 31.8 Down Tube size, Dotek steel crank 24/34/42T with 170mm steel arms, KMC-Z-51 chain, One piece Kenli Bottom Bracket 124.5mm and Comfort PVC Grips.
