BSA30 Bottom Bracket Wrench

BSA30 is the threaded BB shell that hosts a 30 mm spindle: standard 1.37" × 24 TPI BSA threading on the shell side, but cups bored for 30 mm rather than the conventional 24 mm. Race Face Cinch BSA30 cups use a 16-notch outer engagement at the BSA30 OD; that's the cup geometry the 2620/2BI-US is cut to fit. The cup OD is wider than a standard 24 mm HT2 cup, which means a standard 16-notch HT2 wrench will rock on the engagement and round the notches under install torque.

The 2620/2BI-US is the wrench cut specifically for the 16-notch BSA30 cup. The notch profile sizes to the BSA30 outer engagement; the bi-material handle gives a clean hand-grip for off-bench prep, and the laser-cut 1/2" square drive at the head accepts a torque wrench when the cup is ready to be torqued to its install spec.

Socket vs. wrench: which to reach for

The catalog offers two options for 16-notch BSA30 cups: this wrench (2620/2BI-US, fixed handle + 1/2" square drive) and the Aluminum BB Socket BSA30 (socket-only, 1/2" square drive). The choice is workflow-driven: the wrench is the everyday tool when the cup is on the bike and the handle's leverage gets the cup started or backed off without a separate ratchet; the socket is the right tool when a torque wrench is already in hand for the final install torque.

Compatibility

• 16-notch BSA30 cups (Race Face Cinch and other 16-notch BSA30 patterns)
• Not for Praxis M30 (Praxis cups use a 12-notch ~46.3 mm OD pattern; use the 12-Notch BB Wrench 1671.9/2DP for those)
• Not for PF30 / PF30A press-fit shells; those need a press-fit bearing remover
• Not for standard 24 mm-spindle HT2 cups; use the 16 Notch BB Wrench 1609/2BI-US

Specs

• Material: premium flex plus carbon steel, hardened and tempered
• Handle: bi-material grip (comfort + slip-resistance)
• Drive: 1/2" square drive at the head for torque-wrench attachment
• Notch fit: BSA30 outer profile
• Includes: the wrench itself

Built in Zreče

Unior has been forging hand tools in Zreče since 1919, and sponsors professional road and mountain-bike race teams. The 2620/2BI-US is the dedicated wrench for the 16-notch BSA30 cup geometry; shops working on Race Face Cinch-equipped frames pull this wrench off the bench far more often than a Shimano-pattern HT2 wrench would seat on the same cup.

Pro tip from our mechanics

BSA30 keeps BSA's per-side thread handedness: drive-side reverse-threaded (loosens clockwise), non-drive normally threaded. Same rule as a standard BSA HT2 install. The wider cup OD doesn't change the thread direction. The mistake to watch for is over-torquing: 30 mm-spindle BSA cups don't have a universal published torque value, and the band varies by crankset manufacturer. Verify the specific crankset's published install torque before applying final force; Shimano's 35–50 Nm HT2 spec is the wrong reference here.

For the BB install / remove procedure: Replace or clean your bottom bracket →.