Grand Cru French Threaded Bottom Bracket

Yes, this is specifically designed for frames with French-threaded bottom bracket shells (35mm x 1mm). Please verify your frame's threading before purchasing, as French threads are distinct from standard English or Italian threading.

This bottom bracket uses a JIS square taper spindle, which is compatible with the vast majority of vintage and modern square taper cranksets. If you are using a Campagnolo crankset from the 1970s or 80s, note that those typically require an ISO taper, which may cause fitment issues with this JIS spindle.

You will need a standard bottom bracket tool compatible with the splined cups, similar to those used for Shimano cartridge bottom brackets. A torque wrench is recommended to ensure the aluminum cups are seated correctly without over-tightening.

Sealed cartridge bearings are essentially maintenance-free and offer superior protection against dirt and moisture compared to traditional cup-and-cone systems. They provide a smooth, consistent feel without the need for periodic greasing or adjustment.

Yes, the unit comes with the required crank bolts, so you are ready to install your crankset immediately upon mounting the bottom bracket.