IRD QB55 Square Taper Cartridge Bottom Bracket
| Availability: | In stock (1) |
Mass market square taper bottom brackets ain't what they used to be. Since Shimano stopped making the trusty old UN-55, these IRD Quad square taper bottom brackets have been our go-to square taper bottom bracket for mashers, winter riders, and people who seem to chew through bottom brackets quicker than they used to.
Steel cups, aluminum sleeve
– English Threads
– Sealed cartridge bearings
– JIS square taper
– CrMo spindle
– Made in Japan
