New T/O Rear Shock 2018 Harley Softail Street bob Fatboy Heritage Single OEM M8New T O Rear Shock 2018 Harley Softail Street bob Fatboy Heritage Single OEM M8 12. 5" Description New T O Rear Shock 2018 Harley Softail Street bob Fatboy Heritage Single OEM M8 not sure of all applications, new factory harley takeoff shock.. part # on box is 54000138 not sure if thats the shock shown or one they put on's box. selling as pictured. Condition: Used 011919