BB90 Removal Tool

Trek's BB90 is a press-fit bottom bracket sized to a 24 mm Shimano-pattern spindle in a 90.5 mm shell width; distinct from PF30 (46 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. A T-head guide (stamped BB90 #22 or BB90 #24) passes through the bearing; a 13 mm nut then draws the cup out against the knurled bushing that braces the shell. The result is a clean extraction with no percussion against a carbon frame.

How it's used

Insert the T-head guide through the shell and through the back of the bearing or cup, the side Unior marks green. Slide the knurled bushing onto the protruding spindle so it sits against the frame, then tighten the nut with a 13 mm open wrench until the bearing draws out. If the bearing spins in the shell, hold the spindle with a 6 mm open wrench.

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 (90.5 mm shell, 24 mm Shimano-pattern spindle, press-fit bearing in carbon)
• Trek BB95 (the MTB sibling; same construction, different shell width)
• Shimano-pattern press-fit cups with a 22 or 24 mm bearing inner diameter, including BB86, BB92, and SRAM Press Fit GXP, the 24 mm-spindle standards Unior names on this tool
• Not for BB30 (42 mm shell) or PF30 (46 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: trivalent chrome plated; Unior lifetime warranty
• Surface finish: trivalent chrome plated (Cr3+)
• Guide heads: T-heads stamped BB90 #22 and BB90 #24 (D 26.6 mm, D1 24.5 mm) for 22 and 24 mm spindle-ID bearings
• Includes: knurled bushing, two T-head guides, 13 mm nut, and plastic ring (spare 1625.2/2BB90). Official dimensions: A 55 mm, B 54 mm, 318 g

Built in Zreče

Unior has been forging hand tools in Zreče since 1919, and sponsors professional road and mountain-bike race 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

If the bearing spins in the cup as you tighten the 13 mm nut, hold the T-head spindle with a 6 mm open wrench. That is Unior's own instruction, not a shop workaround. Then keep turning the nut until the cup draws out, and repeat from the other side.

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

FAQ

What does the 1625/2BB90 actually fit? Unior designed it for the BB90 bottom bracket system: non-threaded bearings and cups. The same official page also names other 24 mm-spindle press-fit standards: BB86, BB92, and SRAM Press Fit GXP. The two T-head guides are stamped BB90 #22 and BB90 #24, matching Unior's 22 or 24 mm spindle-ID pick in the service manual.

Will it pull a BB30, PF30, or SRAM DUB 30 mm bearing? No. Those use a 30 mm inner-diameter bearing. Unior's tool for that family is the 1625/2 BB30 & DUB removal tool (30 mm puller for BB30, 29 mm for SRAM DUB). PF30 is a 46 mm shell with a 30 mm spindle, not a 42 mm shell; 42 mm is BB30. Do not force the 1625/2BB90 T-heads into a 30 mm race.

How do you use it, and which wrenches? Insert the T-head guide through the shell and through the back of the cup (Unior marks that face green). The knurled bushing braces the frame. Tighten the nut with a 13 mm open wrench until the cup draws out. If the bearing spins, hold the spindle with a 6 mm open wrench. Repeat from the other side. There is no hammer step.

What wears out, and what presses the new bearing back in? The official spare is the plastic ring 1625.2/2BB90 (the white ring on the bushing face). The guide head 1625.1/2BB90 is the other named spare. To install the new bearing, Unior's datasheet shows the 1680/4 cup press; the instruction sheet names the 1721 universal bearing press with the matching adapters. Article 1625/2BB90, SKU 623085, 318 g, Unior lifetime warranty.