
Red Line 42504 20W‑50 Full Synthetic Motorcycle Oil – 1 Quart
High-Performance Ester/PAO Blend – Provided by Elite Race Fab
Red Line 42504 is a heavy-duty 20W‑50 synthetic motorcycle oil designed for modern and classic V‑Twin engines. Built on a superior Ester/PAO synthetic base with high ZDDP anti-wear additives, it offers maximum engine protection, smooth clutch performance, and long drain intervals — even under high heat and load.
Key Benefits:
High film strength for excellent wear protection
Smooth wet-clutch compatibility and gear protection
Superior thermal stability and oxidation resistance
Enhanced detergency for cleaner engine internals
Excellent cold-start lubrication with strong high-temp performance
Specifications:
SAE Grade: 20W‑50
Size: 1 Quart (946 mL)
Base: Ester & Polyalphaolefin (PAO)
ZDDP Level: ~2200 ppm Zinc/Phosphorus
Intended Use: 4-cycle motorcycle engines with integrated or separate transmissions and clutches
Fitment / Recommended Use:
Perfect for:
Harley-Davidson Milwaukee-Eight, Twin Cam, and Evolution motors
V‑Twin touring and cruiser bikes
Air-cooled or high-load motorcycle engines
Applications requiring smooth clutch operation and high-temp durability
Why Buy From Elite Race Fab?
Trusted by serious riders and mechanics
Fast shipping and performance-focused support
No gimmicks — just real protection and performance