The Wheels Manufacturing Specialized OSBB to PF30 Bottom Bracket Spacer Kit is a precision-engineered solution for correctly spacing Specialized OSBB road frames when using PF30-style bottom brackets and non-Specialized cranksets. Designed specifically for 61mm wide Specialized Carbon OSBB shells, this spacer kit allows accurate bottom bracket setup and optimal drivetrain alignment.
This kit includes 46mm internal diameter bottom bracket cup spacers that fit neatly between the bottom bracket cups and the frame. When used with a Wheels Manufacturing GXP-compatible bottom bracket, adding spacers to the non-drive side cup moves the crankset closer to the frame, helping fine-tune chainline alignment and improve drivetrain efficiency.
For Specialized road bike frames with a 61mm OSBB shell, installing 3.5mm of spacers per side effectively widens the bottom bracket shell to 68mm, ensuring compatibility with non-Specialized cranksets. Each spacer is CNC-machined from durable 6061 aluminium and finished in a black anodised coating for strength, corrosion resistance, and long service life.
One kit contains the correct number of spacers to properly space one Specialized OSBB frame, making it an essential component for accurate bottom bracket installation, crank alignment, and long-term drivetrain performance.
- Compatible with Specialized OSBB to PF30 bottom bracket setups
- Designed for 61mm Specialized Carbon OSBB road frames
- 46mm internal diameter bottom bracket cup spacers
- CNC-machined from 6061 aluminium
- Durable black anodised finish
- Improves chainline alignment when used with GXP cranks
- One kit spaces one OSBB shell to 68mm
- Includes: 2 × 2.5mm spacers & 4 × 1mm spacers
- Discipline: Road Cycling
- Size: One Size