Park Tool BBT-118 Steel Bottom Bracket & Lockring Tool Description:
The Park Tool BBT-118 Steel Bottom Bracket & Lockring Tool is a rugged, shop quality tool specifically designed for the installation and removal of select bottom brackets and e-bike chainring lockrings with 8-notch tool fittings. Precisely machined 4140 tool steel ensures long life, and a 3/8″ ratchet, a 1″ hex fitting, and 36mm wrench flats give plenty of options for applying the leverage needed to remove the most stubborn components.
Note: This tool is not rated for use with impact tools/drivers.
Features:
- Heavy duty shop quality bottom bracket/chainring lockring tool
- A precision machined 4140 steel tool for the installation and removal of select threaded bottom brackets and lockrings with 8-notch tool fittings
- 8 notches with a nominal inside diameter of 37.6mm and an outside diameter of 42.7mm
- Extra-deep body to accommodate extra-wide spindles and low-profile walls at the point of engagement, with an internal clearance of 31.14 mm (1.226″) depth (from tool face) x 22.48 mm (0.885″) diameter
- Three methods of tool engagement, with a 3/8″ drive fitting, a 1″ hex fitting, and 36 mm wrench flats that give plenty of leverage options for removing seized components
Can be used to install/remove (among others):
- ISIS Drive Bottom Bracket Cups (including Truvativ and Bontrager)
- Truvativ Giga Pipe Threaded Bottom Bracket
- Shimano Octalink Drive-Side Bottom Bracket cups w/ External Notches
- Chainring Lockring For Bosch Gen 3, Gen 4, and Gen 5 E-Bike Motors
- Chainring Lockring For Specialized® Levo Brose E-Bike Motors






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