Park Tool BBT-79.3 Bottom Bracket Tool
Tools
Park Tool BBT-79.3 Bottom Bracket Tool
Park Tool BBT-79.3 Bottom Bracket Tool
The Park Tool BBT-79.3 is a precision CNC-machined aluminum bottom bracket tool for the installation and removal of 12-notch threaded bottom brackets, including SRAM BSA DUB, Race Face Cinch, Rotor BSA30, Zipp Vuma, Hawk Racing BB3086, and others with a major diameter of 45 to 47mm and a minor diameter of 44mm. Read the overview
2 in stock
- Free shipping on orders over $100. US addresses only.
- 30-day returns in new condition. Read the return policy.
- Price matching. Found it for less? See how it works.
Overview
What does the Park Tool BBT-79.3 Bottom Bracket Tool fit?
The Park Tool BBT-79.3 is a precision CNC-machined aluminum bottom bracket tool for the installation and removal of 12-notch threaded bottom brackets, including SRAM BSA DUB, Race Face Cinch, Rotor BSA30, Zipp Vuma, Hawk Racing BB3086, and others with a major diameter of 45 to 47mm and a minor diameter of 44mm. The anodized aluminum body is easy to identify in a tool drawer and features a ratchet and torque wrench-compatible 3/8-inch drive. The BBT-79.3 also includes integrated threads for full compatibility with the Park Tool BBT-RS Bottom Bracket Tool Retaining System, which applies consistent spring-based tension to keep the tool fully seated during installation and removal.
Manufactured in-house by Park Tool, the BBT-79.3 is the shop-grade solution for modern threaded BB standards that use a 12-notch interface with the specific diameter range it covers. If your bottom bracket is not on the compatibility list, confirm the notch count and outer diameter before ordering, as different brands use different tool engagement dimensions even within the 12-notch category.
All the specs
- Material
- Precision CNC-machined aluminum, anodized
- Drive
- 3/8-inch, ratchet and torque wrench compatible
- Notch Count
- 12-notch
- Major Diameter
- 45-47mm (outside of notches)
- Minor Diameter
- 44mm (inside of notches)
- Compatible Standards
- SRAM BSA DUB, Race Face Cinch, Rotor BSA30, Zipp Vuma, Hawk Racing BB3086
- BBT-RS Compatible
- Yes (integrated threads)
- MPN
- BBT-79.3
Good questions
Get to know Park Tool
There's more to Park Tool than this one product. Our Park Tool page has the full Park Tool lineup we carry and more about the brand.
Visit the Park Tool page →How does the BBT-79.3 differ from the BBT-47?
The BBT-79.3 fits 12-notch bottom brackets with a major diameter of 45-47mm and a minor diameter of 44mm, including SRAM BSA DUB, Race Face Cinch, Rotor BSA30, Zipp Vuma, and Hawk Racing BB3086. The BBT-47 and BBT-47-16 are for T47 bottom brackets with different notch engagement. Always confirm your BB's interface before ordering.
What is the BBT-RS retaining system?
The Park Tool BBT-RS is an optional spring-loaded retention system that threads into the BBT-79.3's integrated threads and applies consistent pressure to keep the tool fully engaged with the BB notches during installation or removal. It is particularly useful for tight or stubborn bottom brackets.
Can I use this with a torque wrench?
Yes. The 3/8-inch drive on the BBT-79.3 is compatible with standard torque wrenches. Using a torque wrench is recommended for bottom bracket installation to hit the manufacturer's specified torque and avoid overtightening.
What riders say about the Lab
“Paul does a great job. He got my bike I bought from someone there in their town and had it packed and shipped to me in Austin, TX… It got here in perfect condition!”
“Fantastic store. It has everything you may want/need for cycling. Great team. Highly recommend to anyone looking for cycling related things and bike service.”
“I recently got back into biking and wanted to add some things onto my bike. They had most of what I was looking for in shop… I'm really happy to have found them.”
Questions About This One?
Not sure on size, fit, or whether this is the right one for you? Ask us. A real person here will answer.
Goes straight to the shop with the product you were looking at attached. No newsletter signup.
