D44mm Aluminum V-Groove Drive Cone W/Rubber Insert for Electric Starter:
SUPSTR or SUPSTRBG.

Outer diameter of the aluminum drive cone: 59mm
Inner diameter of the aluminum drive cone: 51.6mm
Inner diameter of the rubber insert: 38mm

* The Electric Starter SUPSTR come with a smaller 44mm diameter drive cone, this is a optional part of 59mm diameter drive cone.

* There are no splines in the fixing hole wall, you need to install the drive cone with a hammer to the starter shaft, this is the same way how the manufacturer install the cone to the starter. 

Includes：
1 x aluminum drive cone
1 x rubber insert

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