Shimano BB-UN300 Bottom Bracket - English 73 x 123mm Spindle Square Taper JIS CheckoutSpec= QR x 130mm Caliper includes 4 phenolic plastic

Caliper includes 4 phenolic plastic pistons

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Shimano BB-UN300 Bottom Bracket - English 73 x 123mm Spindle Square Taper JIS CheckoutSpec= QR x 130mm Caliper includes 4 phenolic plasticShimano BB UN300 Bottom Bracket English 73 x 123mm Spindle Square Taper JIS. Shimano BB UN300 Square Spindle Bottom BracketsFits JIS square taper cranksets Crankarm fixing bolts sold separately Hollow spindle TECH SPECS Bottom Bracket Shell I. D. 1. 37 BB Frame Interface English BB Shell Width (mm) 73 Spindle Interface Type Square Taper JIS Spindle Length 123 Defined Color Black