Bel-Ray EXP Semi-Synthetic Ester Blend 15W-50 4T Engine Oil - Harley & Indian V-Twin
About Bel-Ray
Bel-Ray has manufactured motorcycle lubricants since 1948, with V-twin specific engine, primary and transmission oils formulated for air-cooled operating temperatures.
Bel-Ray EXP Semi-Synthetic Ester Blend 15W-50 4T engine oil is formulated for the demands of air-cooled and liquid-cooled V-twin motorcycle engines. It delivers high film strength and oxidation resistance across a wide temperature range, crucial for engine longevity.
Why riders pick this
- Ester blend for superior film strength
- Protects air and liquid-cooled V-twin engines
- Stable viscosity across wide temperature range
- Enhanced oxidation resistance for longer oil life
- JASO MA2 certified for wet-clutch protection
This 15W-50 viscosity oil meets API SN and JASO MA2 standards, making it an excellent choice for wet-clutch motorcycles like your Harley-Davidson or Indian Motorcycle. Its advanced blend ensures reliable performance and protection, mile after mile.
Enhanced Performance and Protection
- Synthetic ester blend with select synthetic and petroleum components for balanced lubrication
- High film strength provides improved component protection under stress
- Stable viscosity across a wide temperature range ensures consistent performance
- Improved oxidation resistance helps extend the life of your engine oil
- Prolonged wet clutch life with JASO MA2 certification for confident shifts
Designed for the Rigors of V-Twin Riding
Bel-Ray EXP 15W-50 is engineered to stand up to the heat and stress of V-twin operation, whether you're on a long tour or navigating city streets. This oil helps maintain optimal engine health, reduces wear, and ensures your wet clutch operates smoothly and efficiently, contributing to a better riding experience.
Specifications
- Brand: Bel-Ray
- Manufacturer Part #: 99130-B4LW
- Viscosity Grade: 15W50
- UPC: 690509200249
- Weight: 8.16 lbs
Common questions
Is this 15W-50 oil safe for wet-clutch V-twin motorcycles?
Yes, Bel-Ray EXP is JASO MA2 certified, which means it's specifically formulated to protect wet clutches and prevent slipping or glazing, ensuring consistent power delivery.
What does a 15W-50 viscosity mean for my engine?
A 15W-50 viscosity indicates it behaves like a 15-weight oil at cold startup and a 50-weight oil at operating temperature, providing robust protection across a broad thermal range, suitable for most air-cooled and liquid-cooled 4T engines.
Does this oil meet industry standards for motorcycle engines?
Yes, Bel-Ray EXP meets both API SN and JASO MA2 specifications, confirming its suitability for a wide range of modern four-stroke motorcycle engines, including Harley-Davidson and Indian Motorcycles.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | Bel-Ray |
| TYPE | Chemicals |
| SKU | 840-1615 |
| WEIGHT | 8.16 lb |
