Royal Purple Max-Cycle
Motorcycle Engine Oil

Max-Cycle provides unparalleled film strength when compared to the leading synthetic and mineral oils. Its shear stability and oxidation resistance promote greater performance and protection.

Formulated with select synthetic base oils and Royal Purple’s proprietary **Synerlec additive technology, Max-Cycle greatly reduces engine wear — including ring, cylinder and bearing wear. It continuously adheres to metal surfaces, even after shutdown, to provide instant protection at startup until a full fluid film can be established.

Max-Cycle is specifically formulated to significantly improve motorcycle, ATV and snowmobile engine (and transmission) performance. It’s recommended for use in both air-cooled and liquid-cooled 4-cycle engines and it’s compatible with wet-clutch transmissions.

Max-Cycle’s high film strength dramatically reduces wear. Take a look at the pictures of cam chain tensioners (left).

Each tensioner came from an American V-Twin engine with 10,000 miles of use. The tensioner on the left is from an engine that used the manufacturer’s conventional oil. The tensioner in the middle is from an engine that used the manufacturer’s synthetic oil. The tensioner on the right is from an engine that used Royal Purple after an initial break-in period of 1,500 miles. Once again, all of the cam chain tensioners are shown after a total of 10,000 miles of use. The difference in wear is dramatic.

Max-Cycle exceeds API / JASO new warranty requirements and is compatible with other mineral and synthetic motor oils. No flushing is necessary prior to use. It’s available in 10W30, 10W40 and 20W50 viscosities.

cam chain tensioners
Reducing Engine Heat
Means More Horsepower!
SAE 10W30
946 ml
SAE 10W40
946 ml
SAE 20W50
946 ml

Not all Weights/Grades are stocked year round.
Phone ahead, if not in-stock specific #'s are avaliable via special order. (usually 2 or 3 days)


**Synerlec Additive Technology:

Synerlec, Royal Purple’s proprietary, additive lubricant technology, is the cornerstone of RP's entire product line. It creates an ionic bond that adheres to metal parts to provide continuous protection even at start-up and strengthens the oil to provide unparalleled performance and protection.

Royal Purple’s high film strength prevents contact between metal parts and improves sealing inside the engine for more complete combustion and dramatically reduced wear. Improved combustion creates more power, better fuel economy and reduced emissions.

Royal Purple remains on the metal surface long after ordinary lubricants would have been squeezed out by pressure and heat. It actually improves engine surfaces by responding to increased pressure with increased viscosity until the metal peaks (asperities) undergo deformation and flow into the low spots. Over time, the metal surface becomes extremely smooth and can even develop a mirror-like surface.

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