The BB30, named after the required spindle diameter, is up to 100 grams lighter, has a lower Q factor, more ankle clearance, and longer durability compared to other bottom bracket types. This standard requires specific frame and crankset design. In addition to a 30 mm bottom bracket spindle, the BB30 requires an extra-large frame bottom bracket shell with a width of 68 mm or 73 mm, as well as press-fit bearings secured by lock rings.

Technical data:

Installation: BB30 (42x30mm)

Shell diameter: 42 mm

Shell width: 68/73 mm

Compatibility: for BB30 frames only

Features:

• Up to 12% lighter compared to standard bottom bracket cranksets
• Bearings larger than standard, resulting in less wear
• Increased stiffness thanks to the larger spindle

In the package:

• 1 right Truvativ BB30 bearing
• 1 left Truvativ BB30 bearing
• 2 dust caps
• Spacers included
• Lock ring included