Red Line
Red Line Synthetic Oil delivers premium motorcycle oils, performance fluids and maintenance products engineered for high-performance engines. Known for synthetic motor oils, suspension fluids, chain lubricants and fuel system cleaners, the brand ensures maximum protection and efficiency. Designed for Harley-Davidson, V-Twin and powersports applications, these products enhance durability and performance.
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Red Line - 99239 - Funnel
Red Line
$7.99Red Line - 99239 - FunnelFeaturesThe funnel that worksRotate around to get into those extremely difficult areasWorks with all fluids$7.99 -
Red Line - 43103 - Chain Lube /W Shockproof 13 Oz (6/Case Sold Ea)
Red Line
$18.49Red Line - 43103 - Chain Lube /W Shockproof 13 Oz (6/Case Sold Ea)FeaturesGlobal Trade Item Number: 83522431033Fully Synthetic lubricant specially formulated for road and off-roadMade for all chain...$18.49 -
Red Line - 91102 - Synthetic Suspension Fluid Lkewtr 16Oz (12/Case Sold Ea)
Red Line
$15.99Red Line - 91102 - Synthetic Suspension Fluid Lkewtr 16Oz (12/Case Sold Ea)FeaturesGlobal Trade Item Number: 083522911023Superior shear stability over most popular shock oilsAllows use of lower...$15.99 -
Red Line - 91112 - Synthetic Suspension Fluid 2.5 16 Oz (12/Case Sold Ea)
Red Line
$15.99Red Line - 91112 - Synthetic Suspension Fluid 2.5 16 Oz (12/Case Sold Ea)FeaturesGlobal Trade Item Number: 083522911122Superior shear stability over most popular shock oilsAllows use of lower...$15.99 -
Red Line - 91122 - Synthetic Suspension Fluid 5W 16 Oz (12/Case Sold Ea)
Red Line
$15.99Red Line - 91122 - Synthetic Suspension Fluid 5W 16 Oz (12/Case Sold Ea)FeaturesGlobal Trade Item Number: 083522911221Superior shear stability over most popular shock oilsAllows use of lower...$15.99 -
Red Line - 91132 - Synthetic Suspension Fluid 10W 16 Oz (12/Case Sold Ea)
Red Line
$15.99Red Line - 91132 - Synthetic Suspension Fluid 10W 16 Oz (12/Case Sold Ea) Features Global Trade Item Number: 083522911320 Superior shear stability over most popular shock oils Allows use of...$15.99 -
Red Line - 91142 - Synthetic Suspension Fluid 30W 16 Oz (12/Case Sold Ea)
Red Line
$15.99Red Line - 91142 - Synthetic Suspension Fluid 30W 16 Oz (12/Case Sold Ea)FeaturesGlobal Trade Item Number: 083522911429Superior shear stability over most popular shock oilsAllows use of lower...$15.99 -
Red Line - 90231 - Big Twin Powerpack 20W60 Hd Oil Change Kit
Red Line
$169.99Red Line - 90231 - Big Twin Powerpack 20W60 Hd Oil Change Kit Features Global Trade Item Number: 083522902311 Kit includes: 5 quarts of Motorcycle Oil, 1 quart of V-Twin Transmission Oil with...$169.99 -
Red Line - 20W60 Motor Oil
Red Line
$22.49Specified for four-stroke motocross bikes, ATVs and sportbikes Superior film strength through the use of ester base stocks for protection and ring seal Extended drain intervals over other brands...$22.49 -
Red Line - 20W50 Motor Oil
Red Line
$22.49Specified for four-stroke motocross bikes, ATVs and sportbikes Superior film strength through the use of ester base stocks for protection and ring seal Extended drain intervals over other brands...$22.49 -
Out of stock
Red Line - DOT 4 Brake Fluid 16OZ
Red Line
$17.99Engineered to maintain viscosity and lubricity at extreme temperatures Safeguards against vapor lock and brake fading Blends with and meets specifications of DOT 3, DOT 4, DOT 5.1 604 degrees...$17.99 -
Red Line - Assembly Lube 12OZ
Red Line
$18.99Prepares potential wear surface and prevents metal contact before adequate lubrication can be supplied Unlike other assembly lubes, Red Line's will not plug filters after initial engine...$18.99 -
Out of stock
Red Line - Assembly Lube 4OZ
Red Line
$12.99Prepares potential wear surface and prevents metal contact before adequate lubrication can be supplied Unlike other assembly lubes, Red Line's will not plug filters after initial engine...$12.99 -
Red Line - Big Twin Powerpack 20W-50
Red Line
$169.99Complete kit for Big Twins with either 20W50 or 20W60 motor oil Includes 5 quarts of Motorcycle Oil, 1 quart of V-Twin Transmission Oil with ShockProof, 1 quart of Primary Chain Case Oil, 1 bottle...$169.99 -
Red Line - Complete Fuel System Cleaner 4OZ
Red Line
$7.99Concentrated, high-temp detergents clean your carburetors or fuel injectors, fuel lines, tank, intake valves, combustion chambers, fouled plugs Improves fuel economy, throttle response, hesitation...$7.99 -
Red Line - V-Twin Primary Case Oil 1QT
Red Line
$23.49Same fluid as our famous MTL gear oil This product is for use in the primary chaincase with wet-diaphragm spring clutches. Improves clutch operation while reducing wear and temperature For...$23.49 -
Red Line - V-Twin Transmission OIl W/Shockproof 1QT
Red Line
$25.49This product dampens transmission noise (reducing the notorious shifting clunk found in these gearboxes), dramatically reduces temperature, provides thicker oil films between gear teeth and resists...$25.49
Red Line Performance Fluid Systems – Synthetic Oils, Chain Lubes & Engine Protection Solutions
Red Line Synthetic Oil is a leader in high-performance synthetic lubricants, offering advanced solutions for motorcycle engines, transmissions and suspension systems. Built using premium ester-based synthetic formulations, products like 20W50 motor oil, 20W60 motor oil and Big Twin Powerpack oil change kits provide superior film strength, thermal stability and long-lasting protection under extreme conditions. These oils are specifically engineered for V-Twin engines, delivering improved wear protection and extended drain intervals compared to conventional oils.
Beyond engine oils, the brand offers a comprehensive range of specialty fluids and maintenance products, including synthetic suspension fluids (2.5W, 5W, 10W, 30W), DOT 4 brake fluid and assembly lube. These products are designed to optimize damping performance, ensure consistent braking and protect internal engine components during assembly and rebuilds. Additional solutions like complete fuel system cleaner and funnels support routine maintenance and efficiency. With precise viscosity options and high-quality additives, these fluids meet the needs of riders searching for motorcycle suspension oil, brake fluid for bikes, engine assembly lube and fuel system cleaner for motorcycles, ensuring reliable performance across all riding conditions.
Red Line also provides dedicated drivetrain and care products such as chain lube with Shockproof technology, V-Twin primary case oil and transmission oil with Shockproof additives. These formulations reduce friction, improve gear protection and enhance drivetrain smoothness, especially under heavy loads and high torque conditions. Designed for both street and performance use, these products help maintain long-term reliability while improving ride quality. With a complete lineup covering engine, suspension and drivetrain needs, Red Line continues to meet demand for motorcycle chain lubricant, transmission oil for Harley, primary case oil and complete motorcycle maintenance fluids, making it a comprehensive solution for riders and mechanics alike.