Park Tool BBT-9 Bottom Bracket Tool - Hollow Tech GSREDE1 spring and Pivot Pin

spring and Pivot Pin

and a more controlled deformation

Exceptional rolling efficiency and road feel

precise front shifting and efficient power transfer that Shimano riders have grown accustomed to

coupled with a refined tire bead diameter

Park Tool BBT-9 Bottom Bracket Tool - Hollow Tech GSREDE1 spring and Pivot PinThe BBT 9 is used to remove and install external bearing crankset bottom brackets. One end of the BBT 9 securely engages the 16 notches of bottom bracket cups. The other end of the tool engages the 8 internal splines of the crank arm adjustment cap on Shimano Hollowtech II systems. The BBT 9 fits cups and lockrings with 16 external notches and an outside diameter of approximately 44mm. Specifications Fits 16 notch tool fittings with a major diameter