Red Line Synthetic Oil

Red Line 42904 V-Twin Primary Oil

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SKU:
19565779
MPN:
42904
Availability:
Usually ships the same or next business day. In stock at our CA, FL, GA, KS, MI, PA warehouses.
Shipping:
Calculated at Checkout
Stock Update:
06/11/2026 01:40:22 PM PST
$29.48

Bulk discount rates

Below are the available bulk discount rates for each individual item when you purchase a certain amount

Buy 2 and pay only $24.62 each 24.62
Buy 3 and pay only $23.00 each 23
Buy 4 and pay only $21.69 each 21.69
Buy 5 - 9 and pay only $21.20 each 21.2
Buy 10 or above and pay only $19.88 each 19.88
Stock Update:
06/11/2026 01:40:22 PM PST
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Description

This item is brand-new, factory sealed.

Red Line (42904 V-Twin Primary Case Oil - Engine Oil (1 Quart Bottle)
  • PRIMARY CASE OIL - For 1984-to-present V-Twin American motorcycle engines, including Evolution, Twin Cam, and aftermarket engines of similar design
  • BOOSTS VEHICLE PERFORMANCE - Improves clutch operation while reducing wear and temperature, providing a longer clutch lifespan
  • PERFORM & PROTECT - This product is for use in the primary chaincase with wet-diaphragm spring clutches. Perfect for Motorcycles, ATVs, and Powersports
  • WHY RED LINE - Established in 1979, Red Line Products perform & protect better than any on the market. No compromises
  • FRICTION BALANCED CASE OIL - Most synthetics are too slippery for clutch operation. Our V-Twin Primary Case Oil is a balanced oil limiting slip and performing a smoother operation
  • Manufacturer: Red Line
  • Brand: Red Line
  • Model: 42904
  • Item Weight: 1.7 pounds
  • Product Dimensions: 16 x 12 x 10 inches
  • Item model number: 42904
  • Is Discontinued By Manufacturer: No
  • Exterior: Painted
  • Manufacturer Part Number: 42904
  • OEM Part Number: 42904
  • Special Features: 1 Quart

Everyone thinks about the transmission side, but the clutch and primary chain need love, too. POWERSPORTS GEAR OIL Full-synthetic formulations specific to the latest V-Twins, UTVs, ATVs and Sportbikes Red Line's V-twin primary case oil is designed specifically for 1984-to-present V-Twin American motorcycle engines, including aftermarket engines of similar designs. Similar to Red Line MTL, this product is for use in the primary chaincase with wet-diaphragm spring clutches. Designed to operate over a wide temperature range, V-twin primary case oil improves clutch operation while reducing wear and temperature. Where most synthetics are too slippery for clutch operation, this friction-balanced product is designed to provide less slip, smoother operation, and more power in modified engines. SINCE 1979 In 1979, Red Line Synthetic Oil began creating lubricants for the racing industry. Today, we manufacture more than 100 quality products, including motor oils, gear oils, assembly lubes, fuel additives and our popular WaterWetter cooling additive for the automotive, motorcycle, marine and industrial markets. TECHNOLOGY Using cutting edge technology, Red Line responds to the technical challenges of today's performance industry. We are enthusiasts that stay on top of each market niche, ensuring product recommendations that result in serious performance gains. We use this knowledge of racing to create high-performance products for track cars and street vehicles. Red Line products perform and protect better than any on the market. No compromises. Everyone thinks about the transmission side, but the clutch and primary chain need love, too. POWERSPORTS GEAR OIL Full-synthetic formulations specific to the latest V-Twins, UTVs, ATVs and Sportbikes Red Line's V-twin primary case oil is designed specifically for 1984-to-present V-Twin American motorcycle engines, including aftermarket engines of similar designs. Similar to Red Line MTL, this product is for use in the primary chaincase with wet-diaphragm spring clutches. Designed to operate over a wide temperature range, V-twin primary case oil improves clutch operation while reducing wear and temperature. Where most synthetics are too slippery for clutch operation, this friction-balanced product is designed to provide less slip, smoother operation, and more power in modified engines. SINCE 1979 In 1979, Red Line Synthetic Oil began creating lubricants for the racing industry. Today, we manufacture more than 100 quality products, including motor oils, gear oils, assembly lubes, fuel additives and our popular WaterWetter cooling additive for the automotive, motorcycle, marine and industrial markets. TECHNOLOGY Using cutting edge technology, Red Line responds to the technical challenges of today's performance industry. We are enthusiasts that stay on top of each market niche, ensuring product recommendations that result in serious performance gains. We use this knowledge of racing to create high-performance products for track cars and street vehicles. Red Line products perform and protect better than any on the market. No compromises.

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Warranty Information

All Items are Brand New, Factory Sealed and come with a standard warranty. [Read our policies]
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Red Line 42904 V-Twin Primary Oil
$29.48