NOS Shimano XT/Ultegra BB-UN72 Square Taper Bottom Bracket: 107 x 70mm Italian
Like running square taper cranks, but tired of the bottom bracket weight? This XT/Ultegra BB is nearly 100g lighter than the standard UN-52! Sealed bearings, hollow spindle, buttery smooth.
The 107mm spindle is great for many road bike double cranks.
New old stock, perfect. Cups have threadlocker in them, but the tapers show zero crank installation marks.
- Spindle length: 107mm
- Shell: 70mm
- Threads: Italian
- Square taper JIS