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- – 4-month term
- – No impact on credit to apply
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Selected Option
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30-day returns
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This item is eligible for return within 30 days of receipt
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
In Stock.
Arrives
Thursday, Nov 19
At a glance
- Condition
- New
- Size
- 2 qt
- Liquid Volume
- 64 fl oz
- Package Information
- Bottle
- Vehicle Service Type
- Motorcycle
- Automotive Fit Type
- Vehicle Specific Fit
- In the box
- 20W50 Motorcycle Oil Synthetic
Features 5
- DESIGNED FOR - the latest Big-Twin motorcycle engines that specify 20W50 motor oil, including Milwaukee-Eight, Evolution, Twin Cam and aftermarket engines of similar design
- SUPERIOR FILM STRENGTH - through the use of ester base stocks for protection and ring seal, blended with specific friction modifiers that are compatible with wet-clutches
- FULL-SYNTHETIC - with PAO and Ester base stocks and 2200 ppm of ZDDP for antiwear
- POPULAR MOTOR OIL FOR - JASO MA/MA2 applications
- WHY RED LINE - Established in 1979, Red Line Products perform & protect better than any on the market. No compromises
Specs 13
| Brand | Red Line |
|---|---|
| Liquid Volume | 64 Fluid Ounces |
| Package Information | Bottle |
| Vehicle Service Type | Motorcycle |
| Container Type | Bottle |
| Compatible with Vehicle Type | Motorcycle |
| Automotive Fit Type | Vehicle Specific Fit |
| Brand Name | Red Line |
| Manufacturer Part Number | 42504 |
| UPC | 083522425223 |
| Manufacturer | Red Line |
| Size | 2 Quarts |
| Model Number | 42504 |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, Nov 19
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- Zip Pay in 4
- Financing through Apple Pay
- Financing through Google Pay
Learn more about financing & leasing here.
Top Amazon Reviews
Red Line Motorcycle oil products
Size: 2 Quarts
Best motorcycle oil there is. I stopped using the all everything oil from Harley and Red Line has the 20w50, transmission oil and the main case oil. I have used there product for nine years and love it.
Reviewed in the United States on May 20, 2026 by Loucarb
Best oil for big V twins.
Size: Quart
I started changing my own oil a few years back and tried Red Line for no other reason than the reviews. I have 2 bikes with 103s and an older 88. This oil is amazing compared to the garbage HD uses. You will literally hear and feel your motor run better and quieter. No more clunking or lagging with the throttle. It seems to run so much cooler and smoother. You will not be unhappy with this oil. As a side note, I also use Red Line Primare oil and gear oil and notice a huge difference with them as well. Red Line for all 3 holes.
...
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Reviewed in the United States on March 24, 2019 by mark twain
Great
Size: 2 Quarts
Great for my motorcycle, highly recommend..
Reviewed in the United States on April 26, 2026 by noel eloriaga
Red Line motorcycle oil
Size: Quart
Great oil, better than other.
Reviewed in the United States on June 11, 2026 by Robert Q
Not that it was bad oil, just not worth the extra 3 to ...
Size: Quart
I've been using this oil in my 2005 Buell XB12 for over nine years. I started out with the Harley branded synthetic oil. Then I learned that Harley just rebranded a blended oil from a big-name manufacturer. Not that it was bad oil, just not worth the extra 3 to 4 dollars over mobile one or Castrol V-twin oil. The thing about red line is it is a pure synthetic. Does it make a difference for a regular street bike, I can't really say. The Bull engine is air cooled and runs really hot, especially here in the south. Getting stuck in summer afternoon traffic on the highway is absolute murder. I also like to run the occasional track day, just for fun. After all these years and at about 50,000 miles The bike still runs like new. I opened up the engine to add some hotter cams... and I was surprised to see almost no wear on any metal surfaces. I can't say the redline does something that other oils don't.... but I can't say that it has done an amazing job in my engine.
...
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Reviewed in the United States on September 2, 2017 by C. Motta
Great product
Size: Quart
Great
Reviewed in the United States on April 10, 2026 by Carmen Crisci
Good
Size: Quart
Good
Reviewed in the United States on April 23, 2026 by Fred Lovelace
Performance oil
Size: Quart
Excellent product
Reviewed in the United States on February 7, 2026 by John DiTullio