Royal Purple 21315 Max-Cycle 10W-40 Synthetic Motorcycle Oil - 1 Quart

Royal Purple Max-Cycle is engineered to deliver uncompromising performance and protection for 4-cycle motorcycles, ATVs, and personal watercraft, blending premium synthetic base oils with advanced additive chemistry and proprietary Synerlec technology. This SAE 10W-40 full synthetic oil provides exceptional thermal stability, maximizes power output, and safeguards critical engine components under the most demanding riding conditions.

Key Features:

• Specifically formulated to exceed the demands of highly stressed motorcycle engines and transmissions, recommended for use in both air-cooled and liquid-cooled 4-cycle engines
• Fully optimized for wet-clutch applications, ensuring consistent engagement, confident clutch feel, and smooth, reliable operation
• Formulated with select synthetic base oils and Royal Purple's proprietary Synerlec additive technology, providing improved film strength when compared to leading synthetic and mineral oils
• Shear stability and oxidation resistance keep engines operating at lower temperatures, freeing up horsepower
• Meets or exceeds API requirements and is rated JASO MA2, the highest wet clutch compatibility rating under the JASO T903:2011 Clutch Friction Test
• Independent testing on an American-made V-Twin motorcycle showed engine temperatures reduced by 25°F to 44°F
• Compatible with other mineral and synthetic engine oils, no flushing necessary prior to use

Max-Cycle's high film strength dramatically reduces wear while improved combustion and reduced friction help prevent overheating and extend the life of both the oil and the engine. This 1-quart bottle provides convenient, single-change quantities for most motorcycle applications.