Park Tool Bottom Bracket Hollowtech II Tool (BBT-9) chains And its suspension is out

And its suspension is out of this world: independent wheel suspension

50 pound weight limit per trike

according to Park Tool

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

Front & Rear Fenders

Park Tool Bottom Bracket Hollowtech II Tool (BBT-9) chains And its suspension is outThe 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