If your rides aren’t just weekend parades — heat, traffic, long pulls — you need oil that behaves, not surprises you. BikeMaster 10W-40 Full Synthetic is aimed at four-stroke motorcycles and powersports machines where the engine, clutch and gearbox share lubrication. Keeps the clutch working like it should and doesn’t turn thin when the temps climb.Available sizes: Quart, Gallon — handy whether you’re topping off one bike or doing multiple services.
Real-world notes (what you’ll notice after a change)
Stays put at operating temp, so shifting and clutch feel don’t change mid-ride.
Full synthetic base helps cold starts; fewer nasty dry-start grinds on short trips.
Formulated with clutch compatibility in mind — no slick additives that make wet clutches slip.
Holds up to shear in shared-sump transmissions; important on bikes that eat oil when pushed.
Practical packaging: quart for single services and top-offs, gallon if you do multiple bikes or want less wasted trips to the shop.
Quality & formulation
Blended for motorcycle use where applicable — the additive mix balances film strength, gear protection and clutch-friendly friction. Performance can be vehicle specific, so check your manual if you run something unusual.
FAQs
Is this safe for wet-clutch motorcycles?
Yes — it’s formulated for shared-engine/clutch setups and won’t add the slippery friction modifiers that cause clutch slip.
Can I use it in air-cooled engines?
Many riders do. 10W-40 full synthetic is a common choice for air-cooled fours when the manufacturer allows it.
Quart or gallon — which should I pick?
No compatible vehicles data available.
1 review for Bike Master Full Synthetic Oil
Rated 5 out of 5
Mark –
Changed my whole fleet over to this synthetic and the engines run cooler and smoother. Great value for full synthetic.
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Mark –
Changed my whole fleet over to this synthetic and the engines run cooler and smoother. Great value for full synthetic.