Vevlager Shimano BB-UN55 JIS BSA 68-118 mm

Vevlager Shimano BB-UN55 JIS BSA 73-118 mm

Vevlager Shimano BB-UN55 JIS ITA 70-118 mm

Kassettvevlager. BBUN-55, BSA = Engelsk gäng 34 mm.