✓ VERIFIED
Jun 8, 2015
Great Oil
Can tell how smooth the bike shifts using this oil
BEL-RAY
SKU: 840-1621
Bel-Ray EXS Full Synthetic Ester 10W-40 Engine Oil 1L - Harley & Indian V-Twin
$22.99
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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 EXS Full Synthetic Ester 4T engine oil in 10W-40 viscosity is engineered for the demands of high-performance V-twin engines. This advanced formula provides exceptional protection and consistent performance, mile after mile. It's built with 100% synthetic ester base stocks to ensure your engine runs cooler and cleaner.
Why riders pick this
- 100% synthetic ester base oils for superior film strength
- High viscosity index maintains protection at elevated temperatures
- Exceptional shear stability resists viscosity breakdown
- Reduces friction to help lower engine operating temperatures
- API SN and JASO MA2 certified for four-stroke motorcycle engines
When you're pushing your Harley-Davidson or Indian Motorcycle, engine oil isn't just a lubricant—it's a critical component in performance and longevity. Bel-Ray EXS Full Synthetic Ester 4T engine oil in 10W-40 viscosity is formulated to meet the specific needs of these powerful machines, delivering robust protection under extreme conditions.
Uncompromising Engine Protection
- Utilizes 100% synthetic ester base oils for maximum film strength
- Maintains stable viscosity across a wide range of operating temperatures
- Resists viscosity loss due to shear for consistent performance
- Reduces internal friction to help lower engine operating temperatures
Built for the Road Ahead
This 10W-40 full synthetic ester oil is designed for riders who demand the best for their V-twin. Its API SN and JASO MA2 certifications mean it meets rigorous standards for four-stroke motorcycle engines, ensuring compatibility and peak performance. Whether you're cruising the highway or carving canyons, Bel-Ray EXS provides the thermal stability and wear protection your engine deserves.
Specifications
- Brand: Bel-Ray
- Manufacturer Part #: 99161-B1LW
- UPC: 690509400045
- Viscosity: 10W-40
- Type: Full Synthetic Ester
- Volume: 1 liter
- Certification: API SN, JASO MA2
- Weight: 2.07 lbs
- Package Dimensions: 8 in L x 4 in W x 2 in H
Common questions
Is this oil suitable for my Harley-Davidson or Indian Motorcycle?
Yes, Bel-Ray EXS 10W-40 full synthetic ester oil is formulated for four-stroke motorcycle engines and meets API SN and JASO MA2 standards, making it compatible with most Harley and Indian V-twin engines. Always confirm your owner's manual for specific requirements.
What are the benefits of a full synthetic ester oil?
Full synthetic ester oils offer superior film strength, thermal stability, and shear stability compared to conventional or semi-synthetic oils. This translates to better engine protection, reduced friction, and more consistent performance under demanding conditions.
Will this oil help with engine heat on my V-twin?
Yes, the advanced formulation of Bel-Ray EXS Full Synthetic Ester oil helps reduce internal friction, which can contribute to lower engine operating temperatures, especially beneficial for air-cooled V-twins.
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 | 840-1621 |
| WEIGHT | 2.07 lb |
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
5
4 RATINGS
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✓ VERIFIED
Oct 25, 2021
So Far So Good
Has been run 1,000 miles in my 2016 Ninja 650 ABS with no issues.
✓ VERIFIED
Aug 6, 2020
A+
Good stuff, I guess. Hard to say I notice a difference but I'm sure it helps having the Ester. Good quality oil.
✓ VERIFIED
Jul 25, 2012
Good oil! Put it in my last two harleys ....
