julio 22, 2026
SHIMANO SQUARE TAPER CARTRIDGE B.B., Square Taper, 68 x 127 mm The quality and performance-oriented Shimano BB-UN300 cartridge bearing bottom bracket features a JIS square taper mount and is designed for frames with BSA thread and 68 mm shell width. A stabilizer ensures a constant chain line. BB-UN300 Part # 63-200-2308 UPC 192790619316 Manufacturer # EBBUN300B27B bb type Square Taper model BB-UN300 size 68 x 127 mm spindle JIS Taper