Bbb rollerboys jockey wheels
Bbb rollerboys jockey wheelsreplacement derailleur jockey wheels from bbb made from grivory composite material provided by ems swiss grivory is the proven material for metal replacement features composite material provided by ems swiss reinforced with 40 glass fiber mixture complete set of bushings for different shifting systems included 11t compatible with shimano 9 10 and 11 speedmega range sram x0x9x7 11 and campagnolo 11 speedbuybbb componentsfrom chain reaction cycles the