SHIMANO UN300 Bottom Bracket - 68 x 118mm - BSA - Square Taper giant Nylon chain cover prevents scratching

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

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

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

and economical package</li>

Noiseless function

SHIMANO UN300 Bottom Bracket - 68 x 118mm - BSA - Square Taper giant Nylon chain cover prevents scratchingShimano BB UN300 Square Spindle Bottom Brackets Fits JIS square taper cranksets Crankarm fixing bolts sold separately Hollow spindle