Bel-Ray Big Twin Transmission Oil 1L - Harley & Indian Big 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.
Upgrade your V-twin's shifting experience with Bel-Ray Big Twin Transmission Oil, specifically formulated for motorcycles with separate transmissions and final drives. This 1-liter bottle is engineered to reduce gear wear, quiet gear whine, and improve shift quality in Harley-Davidson and Indian big-twin engines.
Why riders pick this
- API GL-5 rated for extreme pressure
- Reduces gear wear and extends life
- Quiets gear whine for smoother operation
- Improves shift quality and feel
- Works in air-cooled and liquid-cooled V-twins
Unlike engine oil, Bel-Ray Big Twin Transmission Oil is a dedicated gear oil designed to handle the intense pressures and unique sliding-gear action within a motorcycle transmission. Its robust formulation provides a protective film that extends component life and ensures smoother, more precise shifts. This oil is a critical component for maintaining the longevity and performance of your bike's drivetrain.
Optimized for V-Twin Transmissions
- API GL-5 specification for heavy-duty gear protection
- Formulated for separate transmissions and final drives
- Reduces gear wear and extends component lifespan
- Quiets gear whine for a more refined ride
- Improves shifting feel and precision
The Right Fluid for the Right Place
Using a specialized transmission oil like Bel-Ray Big Twin is essential for any V-twin with a separate transmission. Engine oil is simply too thin to provide adequate lubrication and protection for the gears. This dedicated formula works equally well in air-cooled and liquid-cooled big-twin transmissions, making it a reliable choice for a wide range of Harley-Davidson and Indian models. Ensure your transmission gets the specific care it needs for optimal performance and durability.
Specifications
- Brand: Bel-Ray
- Manufacturer Part #: 96900-BT1
- UPC: 690509401318
- Capacity: 1 liter
- Weight: 2.15 lbs
- Dimensions: 8 in L x 4 in W x 2 in H
Common questions
Is this transmission oil suitable for Sportster models?
No, Bel-Ray Big Twin Transmission Oil is designed for V-twin motorcycles with separate transmissions and final drives, like Harley-Davidson Big Twin and Indian models. Sportsters typically use a shared oil for the engine, primary, and transmission.
How often should I change my transmission oil?
Transmission oil change intervals vary by motorcycle model and riding conditions. Always consult your Harley-Davidson or Indian Motorcycle owner's manual for specific recommendations on service schedules.
Can I use this transmission oil in my primary chaincase?
No, this is a dedicated transmission oil (API GL-5) and is not suitable for primary chaincase use. Always use the manufacturer-recommended fluid for your primary drive.
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 | 840-1483 |
| WEIGHT | 2.15 lb |
