🏁 Ride smoother, last longer — the clutch oil pros trust!
Red Line 42904 V-Twin Primary Case Oil is a 1-quart synthetic blend designed specifically for 1984 and newer V-Twin American motorcycle engines, including Evolution and Twin Cam models. Its friction-balanced formula optimizes clutch performance by reducing slip, wear, and operating temperature, making it ideal for motorcycles, ATVs, and powersports vehicles with wet-diaphragm spring clutches. Manufactured in the USA, this oil delivers proven protection and performance trusted by enthusiasts and professionals alike.
| Viscosity | 75W/80W/75W80 sae_grade |
| Brand | Red Line |
| Vehicle Service Type | Car |
| UPC | 083522429047 |
| Automotive Fit Type | Universal Fit |
| Global Trade Identification Number | 00083522429047 |
| Manufacturer | Red Line |
| Size | 1 Quart |
| OEM Part Number | 42904 |
| Model | 42904 |
| Item Weight | 1.7 pounds |
| Product Dimensions | 3.9 x 4.9 x 9 inches |
| Country of Origin | USA |
| Item model number | 42904 |
| Is Discontinued By Manufacturer | No |
| Exterior | Painted |
| Manufacturer Part Number | 42904 |
| Special Features | 1 Quart |
I**
Just what I wanted
Exactly what I thought
G**E
Redline Chaincase Oil
Great Primary Chaincase Oil
S**S
Harley Transmission runs smooth
My got to oil for my Harley. Quality you can count on.
H**W
Redline products ROCK!
Redline lubricants excel in all motorsports. From the aftermarket 6 speed trans & factory wet clutch primary in my '96 Harley Davidson EVO Softail to the Tremec T-56 Magnum 6 speed and 8.8 Traclok rear in my '85 S10 Blazer I trust Redline products, you should too!
T**D
Brand .
The best .
R**.
Quality
Excellent product.
G**!
Check the manual
I ordered the case first, it said it had everything WRONG! Harley Davidson is 38 oz not 1 quart. After changing all three fluids I noticed it wasn't enough primary oil. I had to order another quart for just 3 oz I had to wait another week until it finally came. Because Usps said they tried delivering it on Saturday and lied like usual. Saying they couldn't get up my driveway, which I don't have. So far Redline works great thanks. Remember 38oz
B**N
Recommended
It’s redline. Works great. What else is there to say?
Trustpilot
2 months ago
1 day ago
