Polaris Pro R – Includes 4340 billet crank, 73.5mm stroke, BC ProH2K rods (4.915″ c-to-c), shelf CP or BME pistons (choice of bore/compression).
Stock stroke rotating assembly.
Crank # | BC5916 – 73.5mm |
Rod # | BC6915 – 4.915″ |
Piston # | BME or CP – Shelf |
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