Park Tool Bottom Bracket Hollowtech II Tool (BBT-9) chains The BBT-9 fits cups and

The BBT-9 fits cups and lockrings with 16 external notches and an outside diameter of approximately 44mm

2017    SJ FSR    SJ FSR SW CARBON 29/6FATTIE FRM

2016    ENDURO FSR    ENDURO FSR EXPERT CARBON 650B

2019    SJ FSR ST WMN    SJ FSR ST WMN COMP 29

Park Tool Bottom Bracket Hollowtech II Tool (BBT-9) chains The BBT-9 fits cups andThe 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 the bottom bracket cups. The other end of the tool engages the 8 internal splines of the crank arm adjustment cap. The BBT 9 fits cups and lockrings with 16 external notches and an outside diameter of approximately 44mm. The BBT 9 works with many external bearing crankset bottom brackets, including: Shimano