For all racing and performance street motorcycles where excellence is the only option Silkolene Pro 4 Plus 5W/40 is a great option. Fully synthetic esters provide exceptional film strength and outstanding surface protection from start-up to maximum output in all ambient conditions.

Bike Review SIlkolene Pro 4 Plus 5w

High viscosity index (VI), exceptional shear strength and outstanding thermal stability give excellent stay-ingrade performance and make PRO 4 PLUS the ideal choice for highly tuned engines.

Developed for racing applications and tested extensively in World and National Superbike competition, PRO-4 Plus grades are also of benefit in high performance or highly tuned street bike engines. Available in 1, 4, 20 and 205L drums. Bike Review Silkolene Pro Plus 4 5w

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