Park Tool Bottom Bracket Tool for Shimano Hollowtech II Cups size-29 BOMMA THRUST is the new

BOMMA THRUST is the new benchmark street-bike for those who demand an all-round performer for combos and traffic work

State Bicycle Co

The 29" Fast Ripper packs a serious punch

but its focus has stayed the same

-Long-travel suspension — ~250mm front

Park Tool Bottom Bracket Tool for Shimano Hollowtech II Cups size-29 BOMMA THRUST is the newThe BBT9 is used to remove and install external bearing crankset bottom brackets. One end of the BBT9 securely engages the 16 notches of the bottom bracket cups. The other end of the tool engages the 8 internal splines of the crank arm adjustment cap. The BBT9 fits cups and lockrings with 16 external notches and an outside diameter of approximately 44mm. The BBT9 works with many external bearing crankset bottom brackets, including: Shimano, Hollowtech