Simple, reliable square-taper bottom bracket setReplaces both the BB-UN26 and BB-UN55Sealed cartridge bearingAxe en Cr-MoFor bikes equipped with a chain guard, choose BB-UN300-KFor compatibility with an E-type front derailleur, choose BB-UN300-EWithout chainring bolts; Shimano FC-E6000 bolts recommended
• Only compatible with 73 mm bottom bracket shells• No English BSA threading (1.37 in x 24 TPI)• Dual sealed cartridge bearing construction with steel body, axle and cups• Interface S.I.J. (carrée) standard• Weight: 338 g (113 mm)
Chainring Bolts Sets of 10 mm bolts for threaded chainrings or 6 mm bolt-and-nut sets for standard chainrings 4mm hex socket on the bolts and 6mm on the nuts Works great with Wolf Tooth chainrings or any other chainring threaded M8 x 0.75, such as: 104 BCD x 30T, 104...
Tough, lightweight and durable replacement inner chainrings available in all popular bolt configurations
Laser-cut from 0.316"-thick stainless steel sheet right here in Canada
Designed for 8, 9, or 10-speed drivetrains
Bare stainless steel finish with laser-etched graphics
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