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 engineered for both air-cooled and liquid-cooled V-twin motorcycle engines. This synthetic ester blend delivers high film strength and oxidation resistance, vital for protecting critical engine components.
Why riders pick this
- Synthetic ester blend for enhanced protection
- High film strength guards engine components
- Stable viscosity across extreme temperatures
- Resists oxidation for extended oil life
- JASO MA2 certified for wet-clutch compatibility
With its 15W-50 viscosity, this oil is designed to maintain stable performance across a wide range of temperatures, ensuring your Harley-Davidson or Indian Motorcycle's engine is well-protected. It also promotes prolonged wet clutch life, keeping your friction plates engaged and responsive.
Robust Protection for High-Performance V-Twins
- Synthetic ester base with select synthetic and petroleum components for superior lubrication
- High film strength provides superior component protection under demanding conditions
- High viscosity index ensures stable performance across diverse temperature ranges
- Improved oxidation resistance extends oil life and prevents premature breakdown
- Prolonged wet clutch life with JASO MA2 certification for consistent engagement
Maintain Peak Engine Health
Choosing Bel-Ray EXP 15W-50 means investing in the long-term health and performance of your V-twin. This oil is formulated to withstand the rigors of the road, offering peace of mind that your engine and clutch are receiving optimal care. Its advanced blend helps maintain horsepower and torque delivery, ride after ride.
Specifications
- Brand: Bel-Ray
- Manufacturer Part #: 99130-B1LW
- UPC: 690509200232
- Viscosity Grade: 15W-50
- Type: Semi-synthetic ester blend
- Weight: 2.12 lbs
- Certifications: API SN, JASO MA2
Common questions
Is this 15W-50 oil suitable for wet-clutch V-twin motorcycles?
Yes, Bel-Ray EXP 15W-50 is JASO MA2 certified, meaning it's formulated to prolong wet clutch life and ensure proper, slip-free engagement in your V-twin.
What types of engines can use this viscosity grade?
This 15W-50 viscosity grade is suitable for both air-cooled and liquid-cooled four-stroke motorcycle engines, especially in conditions where higher temperature stability is desired.
How does this oil protect critical engine components?
The synthetic ester blend provides high film strength and excellent oxidation resistance, which work together to protect bearings, cams, and other vital engine parts from wear and heat degradation.
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 | 840-1614 |
| WEIGHT | 2.12 lb |
