SHIMANO UN300 Bottom Bracket - 68 x 118mm - BSA - Square Taper giant Its nickel-plated steel construction helps

Its nickel-plated steel construction helps extend the chain's lifespan while SRAM's convenient Snap Lock connecting link makes installation and removal a simple endeavor

maximum payload: 5 kg

Measure trainer at the widest setting and measure the bike frame width at the rear hub

flexible pads giving you total comfort during any ride

Nylon chain cover prevents scratching and allows for compact storage: throw it over your shoulder

SHIMANO UN300 Bottom Bracket - 68 x 118mm - BSA - Square Taper giant Its nickel-plated steel construction helpsShimano BB UN300 Square Spindle Bottom Brackets Fits JIS square taper cranksets Crankarm fixing bolts sold separately Hollow spindle