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⚙️ Shift Smooth, Ride Loud—But Keep the Noise Out!
Bel-Ray Big Twin Transmission Oil is a synthetic 85W-140 multi-grade oil designed for heavily loaded 4-stroke V-Twin motorcycle transmissions. It reduces gear noise, smooths shifting, and provides superior anti-wear protection, making it a trusted choice for Big Twin air-cooled and liquid-cooled transmissions.
| ASIN | B005K60FJK |
| Best Sellers Rank | #21,728 in Automotive ( See Top 100 in Automotive ) #39 in Gear Oils |
| Brand | Bel-Ray |
| Brand Name | Bel-Ray |
| Container Type | Bottle |
| Customer Reviews | 4.8 out of 5 stars 655 Reviews |
| Included Components | Bel-Ray 96900-BT1 |
| Item Form | Oil |
| Item Height | 2.5 inches |
| Item Type Name | Gear Oils |
| Item Weight | 2 Pounds |
| Liquid Volume | 1 Liters |
| Manufacturer | Bel-Ray |
| Material | Synthetic |
| Package Information | Bottle |
| Recommended Uses For Product | Transmission Oil |
| Specific Uses For Product | Motorcycle transmissions and final drives, Big Twin air-cooled/liquid-cooled transmissions and final drives, meeting API GL-5 standard |
| UPC | 690509401318 690509114225 |
| Unit Count | 33.814 Fluid Ounces |
| Upper Temperature Rating | 350 Degrees Fahrenheit |
| Viscosity | 85W 140 |
| Warranty Description | Manufacturer |
L**S
Great Stuff
Works awesome in Harley Transmission, makes it smooth and less noise and shift easier. Been using Bel Ray for years in my offroad vehicles
A**R
Good
Good product
B**.
Butter smooth shifting
Have been using Amsoil in my 94 Harley FXDL. Decided to try Bel-Ray. Unbelievable difference in the shifting. Butter smooth. I'm a believer now in this product.
G**L
Smoother running Harley FLHT
Much smoother gear changes and smoother running 2008 Harley FLHT
E**Y
Get it
Good value and shipping speed
A**R
Great product . But USPS shipping is horrible 11 days from time ordered . Sat in NJ for 4 days .
Shipping took 11 days from time ordered . Not sellers fault usps shipping left it sit 4 days in New Jersey.
J**W
Easy
Works good
A**R
Worked perfectly
Worked perfectly
Trustpilot
1 week ago
2 weeks ago