BB90 Removal Tool

Trek's BB90 is a press-fit bottom bracket sized to a 24 mm Shimano-pattern spindle in a 90 mm shell width; distinct from PF30 (42 mm shell, 30 mm spindle) and from BB86 (also 24 mm spindle but 86.5 mm shell). The bearing presses directly into the carbon shell, with no separate BB cup between the bearing and the frame. That construction has a service consequence: removing the bearing without a dedicated tool means percussion through the shell, which on a high-end Trek carbon frame is a transferable error onto the frame's warranty.

The 1625/2BB90 is the bearing remover sized to BB90 specifically. The expanding tip threads into the bearing's inner race; tension on the puller body draws the bearing out along the shell axis without side load on the bore. The result is a clean extraction with no percussion against a carbon frame.

How it's used

Thread the puller's expanding tip into the inner race of the BB90 bearing from the inside of the shell. Tighten the puller body to expand the tip's grip against the race. Pull the bearing axially using the puller's handle; the bearing slides out through the shell without the hammer-and-punch step.

For the second bearing on the same shell, repeat from the opposite side. Each bearing comes out under controlled tension, which is the only way to extract bearings from a carbon shell without risking a warranty conversation about chasing damage.

Compatibility

• Trek BB90 (90 mm shell, 24 mm Shimano-pattern spindle, press-fit bearing in carbon)
• Trek BB95 (the MTB sibling; same construction, different shell width)
• Not for BB30 / PF30 (42 mm shell); use the BB30 Bearing Puller 1625/2
• Not for threaded BBs (BSA, T47); those use the appropriate notched socket or wrench

Specs

• Material: premium flex plus carbon steel, hardened and tempered
• Surface finish: trivalent chrome plated per ISO 1456:2009
• Expanding tip: sized to BB90 / BB95 bearing inner-race ID
• Includes: the puller assembly with expanding tip and handle

Built in Zreče

Unior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. Trek's BB90 is the carbon-shell case where bearing extraction without a dedicated tool means chasing frame damage; the 1625/2BB90 is the tool that keeps the extraction clean, the frame intact, and the warranty conversation off the bench.

Pro tip from our mechanics

When pulling a BB90 bearing, watch the bearing's outer race as it comes out for signs of fretting corrosion; a brownish powder or polished ring around the press-fit contact surface. Fretting on the outer race is the signal that the shell-and-bearing interface had been micro-moving under load, which is the most common cause of the BB90 creak. The fix isn't a different bearing; it's cleaning the shell bore thoroughly and re-pressing the new bearing with a fresh layer of bearing-retaining compound. The bearing alone is rarely the root cause.

For the diagnostic order on BB-area noise before pulling the bearing: Creaky bottom bracket? Check these first →.