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⚙️ Shift Smooth, Ride Proud – The Ultimate V-Twin Transmission Oil
Red Line 42804 V-Twin Transmission Oil is a synthetic 75W140 fluid engineered to reduce transmission noise, lower operating temperatures, and provide superior gear protection for Harley-Davidson and other high-revving V-twin motorcycles. Compatible with aftermarket setups like Baker, Jims, and S&S, it delivers a thicker oil film that resists throw-off, ensuring smooth, reliable shifting and extended transmission life.






| ASIN | B004X973EA |
| Best Sellers Rank | #24,772 in Automotive ( See Top 100 in Automotive ) #402 in Automotive Oils |
| Brand Name | Red Line |
| Container Type | Bottle |
| Customer Reviews | 4.9 4.9 out of 5 stars (1,759) |
| Global Trade Identification Number | 00083522428040 |
| Item Form | Oil |
| Item Weight | 771 g |
| Liquid Volume | 32 Fluid Ounces |
| Manufacturer | Red Line |
| Material | Synthetic |
| Recommended Uses For Product | Transmission Oil |
| Specific Uses For Product | Reduce transmission noise, improve performance, designed for high-impact situations, specifically designed for high-revolution 4-stroke motocross bikes and ATVs |
| UPC | 083522428040 |
| Unit Count | 32 Fluid Ounces |
| Viscosity | 75W140 |
B**1
Have been using red line transmission oil and primary oil for years in my harley. Very happy with it. Is very high quality oil
Y**A
good oil, affordable, works great, color is fun, and smells like fresh oil. works well in the trans for my v twin.
T**E
Put in my street glide. Good stuff so far. Shifts a heck of lot quieter and finding neutral isn't an issue thus far. Think I like it better than amsoil's trans fluid.
K**S
Best oil for a harley hands down smooth shifting great value
M**E
Used it before. No issues.
Trustpilot
3 weeks ago
3 weeks ago