Wheels Mfg. Bottom Bracket

This bottom bracket is designed specifically for cranksets with a 30mm spindle. Please verify your crankset spindle diameter before purchasing, as it will not fit standard 24mm or GXP spindles.

This is a PF30 bottom bracket designed for frames with a 46mm shell diameter. It is compatible with shell widths ranging from 61mm to 86.5mm, so check your frame's specific bottom bracket standard to ensure a proper press-fit.

The machined aluminum cups offer significantly better structural rigidity and durability compared to plastic alternatives. This construction helps prevent creaking and ensures the bearings remain perfectly aligned under heavy pedaling loads.

The unit uses high-quality ABEC 3 sealed steel bearings. While the bearings are sealed to prevent contamination, they are not designed to be serviced or repacked; if they eventually wear out, the entire unit is typically replaced.

The dual silicone seals are highly effective at keeping out grit, mud, and water. They provide a robust barrier that significantly extends the lifespan of the bearings compared to standard single-seal designs, making this a solid choice for all-weather riding.