Extends drain intervals

The RPT air intake flows better than stock and optimizes overall performance due to Cobra's unique internal venturi design

325 CCA (Cold Cranking Amps)

81-84 Z 750 L 750cc

Thanks to the double valve

bel ray thumper r racing synthetic blend motorolja 10w 40 1l 2OM Extends drain intervalsBel Ray Thumper Racing Synthetic Ester Blend 4T Engine Oil is a 4 stroke motorcycle racing oil that combines the finest quality synthetic esters and highly refined mineral base oils specifically engineered for todays 4 stroke single cylinder, multi valve racing engines. Provides maximum anti wear protection for valve trains, rings, cylinders and pistons. Delivers maximum horsepower while providing consistent clutch performance. Meets API SN and JASO