
BBT-147-12 Steel Bottom Bracket Tool
Loading store availability...
Park Tool
The Park Tool BBT-147-12 Steel Bottom Bracket Tool is a precision-machined 4140 steel workshop tool for removal and installation of threaded bottom brackets with 12-notch T47 tool fittings. The BBT-147-12 fits 12-notch fittings with a major diameter of 50–53mm and a minor diameter of 48.2mm — a spec range covering Chris King ThreadFit T47, ThreadFit 30, ThreadFit T47 24x, and ThreadFit T47 30, as well as BBInfinite T47, Hambini T47, Rotor T47 External 30mm, and multiple Rotor thread-together standards including BBright, BB30, BB386EVO, and PF30. The extra-deep body handles extra-wide spindles, and low-profile walls at the engagement point reach recessed lockrings that standard-depth tools cannot access. Three drive options — 3/8" drive, 1" hex, and 36mm wrench flats — tackle even heavily seized cups, and integrated threads accept the Park Tool BBT-RS Bottom Bracket Tool Retaining System or GPS-1 Guide Pins (each sold separately) for improved alignment during service.
Join our insider list. We’ll email your code and auto-apply it to your cart. *Discount taken at checkout. Cannot be combined with select price-restricted items. See cart for details. Bikes and sale items are excluded.
Works pertect!
Went with the rival setup instead of force and I am super happy that I did. If you don’t need the extra button on the hoods, these are probably the best value item in the AXS drivetrain.
Smooth, fast, and honestly impressive service in this day and age. Thanks Sierra, ya’ll rock!
True to size, comfortable, sticky. Confidence inspiring.
I'm satisfied with my purchase and my new bike tires I have saved money by choosing Sierra bicycle supply
Just perfect ítems ! Very honest!
from the color to the style and the fit! Perfect!
The S-Works Prevail 3 is one of the most comfortable bike helmets I’ve worn. The fit system adjusts perfectly, and once I ratchet the MIPS cradle to my head, the helmet almost disappears — it conforms so well that I barely notice I’m wearing it.
Ventilation is excellent. Riding in moderate weather around the mid-70s, my head stayed cool and comfortable without overheating. The airflow design really works.
Thankfully, I haven’t had to test the helmet in a crash, and I hope I never do. But the build quality and design give me a lot of confidence in the protection it offers. Highly recommended.
Very impressed by the whole experience with Sierra Bicycle Supply! The frameset was just as shown - brand new and gorgeous. It shipped fast with tracking info. Great pricing on the frameset and I picked up other stuff for my build. Great overall experience - highly recommended!!
Amazing bike at super price. Free shipping. Highly recommend buying from these guys.