- Standard BSA (or ISO)
- French thread
- Italian thread (On sale!)
- Threadless, which fit Swiss and several other odd sizes.
BTW, we are overstocked on Italian thread BBs so they are on sale.
All Grand Cru bottom bracket have oversize sealed bearings and boron-steel hollow axles. Both cups are alloy. The quality is first rate. Axle bolts are included. 258gm average weight. JIS taper.