UMA RACING PERFORMANCE OIL
UMA Engine Oil Collection
High-performance synthetic engine oils engineered for smoother riding,
maximum engine protection, improved throttle response, and longer engine life.

Yamalube 4T 10W-40 is a premium Semi-Synthetic engine oil formulated by Yamaha specifically for high-performance 4-stroke motorcycle engines. It combines high-quality mineral bases with advanced synthetic stocks and a specialized additive package to deliver outstanding engine protection, thermal stability, and smooth clutch engagement.
As an authentic product designed by Yamaha engineers, this 10W-40 grade is the exact recommendation for a vast majority of modern sports, commuter, and touring motorcycles.
Key Features
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Yamaha-Engineered Performance: Developed specifically to match the internal tolerances and demands of Yamaha high-revving engines, though it works excellently in all 4-stroke motorcycles requiring a 10W-40 viscosity.
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Optimal Clutch Grip (JASO MA2): Fully certified to meet JASO MA2 standards. It prevents wet-clutch slippage under high-load conditions, ensuring crisp gear changes and immediate power transfer to the rear wheel.
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Advanced Anti-Wear Technology: Forms a durable molecular film over critical internal components like the valvetrain, cylinders, and pistons, significantly reducing friction and mechanical wear.
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Excellent Thermal Stability: The semi-synthetic composition provides superior resistance against oil oxidation and “thinning” when subjected to intense engine heat or stop-and-go city traffic.
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Gearbox Protection: Formulated with extreme-pressure additives that cushion gear teeth during fast shifts, helping to eliminate “notchy” gearboxes and reduce transmission noise.
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Engine Cleanliness: High-grade detergents and dispersants actively prevent the formation of harmful sludge and carbon deposits, keeping the engine running efficiently.
Technical Specifications
| Feature | Yamalube 4T 10W-40 Details |
| Viscosity Grade | 10W-40 |
| Oil Type | Semi-Synthetic (Premium Blend) |
| Volume | 1 Liter |
| JASO Standard | JASO MA2 (Highest wet-clutch rating) |
| API Standard | API SL / SL or higher |
| Application | Sports, Naked, Cruiser, and Commuter 4T Bikes |
Why Choose Yamalube 4T 10W-40?
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The OEM Benchmark: If you ride a Yamaha R15, MT-15, FZ Series, or Fazer, using Yamalube ensures you are keeping your machine running exactly as the factory intended.
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Smooth Shifting Experience: It is highly regarded for smoothing out transmission shifts, making finding neutral easier and eliminating harsh gear engagements.
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Balanced Value: It delivers the high-heat protection and longevity benefits of synthetic oils without the higher premium price of a 100% full synthetic product.
Maintenance Tip
To keep your engine in pristine condition, it is recommended to change Yamalube 4T Semi-Synthetic oil every 3,500 to 4,500 km, depending on your riding style. If you use your motorcycle for aggressive sports riding or daily delivery routes in hot climates, consider refreshing it closer to 3,500 km. Always replace the oil filter during every change to maximize the performance of the clean oil.












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