The job
A manual 16-notch tool with an eight-point Shimano adjusting-cap contact at the opposite end.
Park Tool · Bottom-bracket cup tool
Park Tool BBT-9 Bottom Bracket Tool
A manual 16-notch tool with an eight-point Shimano adjusting-cap contact at the opposite end.
$38.95Nov 7, 26, 12:52 AM · New York
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- Main contact 16 notches; 44–45 mm major / 42.7 mm minor diameter
- Second contact Eight-point Shimano crank adjusting-cap tool
- Construction Plated steel with vinyl-dipped handle
Main contact
16 notches; 44–45 mm major / 42.7 mm minor diameter
Check the cup, not just the crank brand
Different cup diameters can appear under the same crank-system name. Use the actual cup model and contact geometry.
What this choice changes
Cup engagement and a crank-cap tool on one handle
The BBT-9 combines two separate tasks in one handled tool. Its large end engages matching 16-notch external bottom-bracket cups; the small end serves the eight-point Shimano crank adjusting cap, equivalent in role to the TL-FC16/TL-FC18. This can make it a practical first purchase when the bike needs both contacts, provided its cup diameter is also correct.
The cup contact has a 44–45 mm major diameter and 42.7 mm minor diameter. Park Tool names several older Shimano external cups and matching cups from other makers, but a brand name or the words Hollowtech II alone are not enough to select it. Count the notches and confirm the exact bottom-bracket model, especially when comparing smaller modern cups.
The plated-steel tool includes its own vinyl-dipped handle. Compare the BBT-19.2 when you need a socket format for a compatible torque wrench instead. Their main cup fitting is related, but their permitted jobs differ: Park Tool includes matching 16-notch rotor lockrings in the BBT-9 scope and excludes shallow rotor-lockring use for the BBT-19.2.
Specifications & supplied details
| Detail | Specification |
|---|---|
| Main contact | 16 notches; 44–45 mm major / 42.7 mm minor diameter |
| Second contact | Eight-point Shimano crank adjusting-cap tool |
| Construction | Plated steel with vinyl-dipped handle |
| Drive | Integrated manual handle |
| Named examples | Shimano BB80, BB5700, XT BB70 and BB51; other exact matching fittings |
| Supplied | One handled tool with both contacts |
Choose for your actual setup
Check the cup, not just the crank brand
Different cup diameters can appear under the same crank-system name. Use the actual cup model and contact geometry.
Choose your driving method
The handle is built in. A socket such as BBT-19.2 is the alternative when the job needs a separate compatible driving tool.
Fit checks & limits
- The cap tool does not make every Hollowtech II bottom-bracket cup compatible.
- Use only the component maker’s prescribed tightening procedure; this handle is not a torque-measuring wrench.
Questions before you choose
Do I also need the TL-FC16?
Not for the same matching eight-point cap function: the BBT-9 already includes an equivalent contact. A separate TL-FC16 is an alternative format.
Can I use it on a rotor lockring?
Park Tool lists matching 16-notch rotor lockrings for the BBT-9. Confirm the exact fitting; this permission must not be transferred to every 16-notch socket.
Why choose the BBT-19.2 instead?
Its 3/8-inch square drive and external flats accept separate driving tools. Choose by the required procedure and interface, not only the shared cup size.
Guides for this choice
Buying guide ↗
Match the Component Contact Before the Drive Handle
Separate the surface that touches the bicycle from the interface that accepts your wrench, then check access and any required retaining accessory.
Buying guide ↗Choose Crank Pullers, Cap Tools and Bottom-Bracket Contacts
Separate arm extraction, cap adjustment, cup engagement and counterholding to buy the contacts your actual drivetrain needs.
Alternatives to compare
Other equipment to consider
Selected listing details, manufacturer information and source images were compared. No hands-on trial or universal fit is claimed. Product identifier: B000C12BMW.