The Wheels Manufacturing 29mm Open Bore Adapter is a precision-machined drift designed for installing 29mm sealed bearings into bottom bracket cups and direct-fit frames such as Trek BB90. Essential for professional bike workshops and at-home mechanics, this tool provides a reliable and accurate interface for pressing bearings without damaging the frame or hardware.
Designed for 29mm Sealed Bearings:
Optimised to press 29mm diameter sealed bearings into bottom bracket shells and direct-fit frames, ensuring a secure and proper fit every time.
Precision-Machined Fit:
Engineered with a 29mm outer diameter step, this adapter aligns perfectly with the inner race of the sealed bearing, reducing the risk of misalignment or damage during installation.
Compatible with Wheels Manufacturing Press Kits
Fully compatible with:
- WMTLBBEK (Bottom Bracket Bearing Press Kit)
- WMTLBBPK (Pro Press Kit)
Ideal for Trek BB90 and Similar Direct Fit Frames:
Commonly used for Trek BB90 bottom bracket systems and other similar direct-fit frame designs that use 29mm bearings.
Sold Individually: Please note: this adapter is sold as a single unit – most installations will require two drifts (one for each side).
Ideal For:
- Bike mechanics installing 29mm bottom bracket bearings
- Home workshop use with Wheels Mfg bearing press kits
- Riders upgrading or servicing Trek BB90 bottom brackets
Ensure a perfect bearing installation every time with the Wheels Manufacturing 29mm Open Bore Adapter, a must-have tool for precision, durability, and compatibility with today's most popular bottom bracket standards.