The BBT-29 is a double-ended bottom bracket wrench designed to fit 16-notch bearing cups with an outside diameter of 39mm (e.g. Shimano® Dura-Ace® 9000/R9100 series and XTR® M9000 series) as well as 16-notch bearing cups with an outside diameter of 48.5mm (e.g. FSA®MegaEvo®).
Double sided bottom bracket tool
Fits 16-notch bearing cups with outside diameter of 39mm or 48.5mm
Works much better than the piece of plastic that is normally supplied with Shimano bottom brackets. Is better to use than a square drive setup because the force applied is inline with the bearing - not offset as with a square drive and socket.
I could not have installed my Wheels Mfg BB without, it but if Jenson would really be on the ball, they would have for sale a 48.5 socket so I could use a torque wrench to tighten the BB instead of guessing.
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