741333 Spectro Heavy Duty Gear Guard SAE 85W140 Gear Oil 60 Liter D

Spectro Premium Gear Guard is a multi-viscosity SAE 85W140 GL5 gear lubricant engineered for extreme high-pressure environments. This heavy-duty formula is specifically developed to quieten noisy gear sets in Harley-Davidson 4-speed and 5-speed Big Twin transmissions. By exceeding GL1 through GL5 classifications, this lubricant provides superior fluid flow to bearings and reduces drivetrain friction for smoother shifting. Spectro Oils of America incorporates specialized additives that resist shear and maintain viscosity under heavy loads. It is an essential choice for riders looking to improve transmission performance and longevity while minimizing mechanical noise during operation.