MCS-500155 - 50mm ID; 12mm offset (20mm offset incl. sprocket width). Stock style for all 82-85 FXR 5-speed models. The OEM 12mm built-in offset of the FXR sprocket is a good solution to add 6mm additional clearance for 4-speed custom bikes for extra wide rear tires.

Fitment:
82-85 FXR; 73-99 style offset chop (NU)