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> Bicycling Catalog > Parts + Tools > Maintenance > Tools > Park Tool > Bottom Bracket Lockring Wrench
Park Tool Bottom Bracket Lockring Wrench

Park Tool

Bottom Bracket Lockring Wrench

Model # (BBT-7)
Availability: In Stock Check Store Availability
Product Rating
4.0 stars
 (1 Review)

Park Tool Bottom Bracket Lockring Wrench

Park's Lockring Wrench is for installing and removing the adjustable-cup lockring used on Dura-Ace and XTR bottom brackets that use a left-side lockring (it fits several other models and brands of lockrings, too). The Lockring Wrench is laser cut and engages 5 of the lockring's 6 notches for a precise, secure fit. The vinyl-coated handle offers a great grip, too.

Features and Information

  • The major diameter of this tool is nominally 46.5mm. The minor diameter (at the notches), is nominally 41mm.


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4.0 stars

(based on 1 review)


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Use on Campagnolo

By Rktboy

from Winter Springs, FL

About Me Avid Cyclist


I contacted Park Tool about which BBT I should use on the lock ring for an early 70's Campy Nuovo Record. They told me this one, the BBT-7. They said the fit isn't perfect, but its not enough off to justify a separate production line for this tool. My vintage Campy lock ring tool is on the road somewhere in North Florida after bouncing out years ago. Good luck!

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Barcode Manufacturer's Part Number Store SKU
00763477000477 BBT-7 75221