The BBB Cycling BottomFit BBO-29 is a premium press-fit bottom bracket featuring a three-piece threaded design. This unique construction allows the two sides to thread together inside the frame, eliminating creaks and ensuring perfect bearing alignment. It is fully CNC machined from high-strength 7075-T6 aluminum for maximum durability and precision.

Equipped with self-aligning chrome steel bearings, the BBO-29 offers exceptionally smooth rotation and high load capacity. Co-molded bearing shields provide a robust defense against water and grit, extending the life of your drivetrain. Designed for 24mm spindle cranksets, it is a versatile and quiet solution for modern BB86 and BB92 frame standards.

Quick Facts

Feature	Specification
Frame Interface	PF41 (86.5 / 89.5 / 92mm Width)
Spindle Diameter	24mm (Shimano Hollowtech II, etc.)
Design	3-Piece Thread-Together Press Fit
Material	7075-T6 Anodized Aluminum
Bearings	Self-Aligning Chrome Steel
Protection	Co-molded Bearing Shields