Bel-Ray big Twin oil for the win
Will not use OEM oil after buying Bel-Ray, this oil makes it very easy to find neutral, shifting seems smoother and less “clunky” sounding. It’s all I will be using from now on.
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 Big Twin Transmission Oil 85W140 is a full synthetic gear oil formulated for Harley-Davidson and Indian Motorcycle transmissions and final drives with separate lubrication systems. It delivers robust wear protection, reduces gear noise, and significantly improves shift quality in both air-cooled and liquid-cooled Big Twin engines.
Your V-twin's transmission works hard, and Bel-Ray Big Twin Transmission Oil is designed to meet that challenge head-on. This full synthetic 85W140 gear oil provides exceptional lubrication and cushioning for gears, minimizing wear and extending the life of your transmission components. Riders will notice smoother, more precise shifts and a reduction in annoying gear whine, enhancing the overall riding experience.
Offered in a convenient 6-gallon bag-in-box (BIB) format, this transmission oil is perfect for riders who perform regular maintenance or for shops servicing multiple Harley-Davidson and Indian Motorcycle Big Twin models. Having a bulk supply ensures you're always prepared for transmission fluid changes, keeping your V-twin's drivetrain in optimal condition with Bel-Ray's proven performance.
Is this transmission oil suitable for both Harley-Davidson and Indian Motorcycle Big Twins?
Yes, Bel-Ray Big Twin Transmission Oil 85W140 is formulated for V-twin motorcycles with separate transmission and final drive lubrication systems, including Harley-Davidson and Indian Motorcycle Big Twin models.
What does API GL-5 mean for transmission oil?
API GL-5 is the American Petroleum Institute's highest gear oil specification, indicating it's formulated for high-pressure differentials and demanding gear train applications, offering superior protection against wear.
Will this oil help with noisy shifting or gear whine?
Yes, this transmission oil is specifically designed to reduce gear whine and improve shifting smoothness, contributing to a quieter and more refined riding experience.
| BRAND | Bel-Ray |
| TYPE | Chemicals |
| SKU | 840-1583 |
| WEIGHT | 45.0 lb |
Will not use OEM oil after buying Bel-Ray, this oil makes it very easy to find neutral, shifting seems smoother and less “clunky” sounding. It’s all I will be using from now on.
Bel-Ray is all I use in my Harley primary & trans. I’ve tried many and bel-ray makes shifting and finding neutral a piece of cake
Bel-Ray transmission oil works great and allows very smooth and quiet shifting without the notorious Harley clunk.
I have tried several different transmission fluids throughout the years for my Harleys and I think Bel-Ray is the best. It doesn't take out all the noise when shifting but it is the quitest of anything I have tried.
Transmission shifts smoother now!
used some on my wife she loved it.<br />need more for the bike though