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    AMSOIL Motorcycle Oil — V-Twin, Street, Adventure & Dirt Bike

    Purpose-built synthetic oil for every bike you ride. JASO MA2 certified across the entire line — wet-clutch safe for Harley-Davidson, Honda, Yamaha, Kawasaki, Suzuki, Ducati, BMW, KTM, Triumph, Aprilia, Husqvarna, GASGAS, Beta, and Indian.

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    Choose Your Motorcycle Type

    AMSOIL builds dedicated formulas for each motorcycle category — not a single one-size-fits-all oil. Pick your bike type below to see all products, viscosities, and AMSOIL product codes.

    AMSOIL V-Twin Motorcycle Oil

    Harley-Davidson & American V-Twin

    V-Twin Motorcycle Oil

    Synthetic engine oil, primary fluid, and transmission fluid for Harley-Davidson Twin Cam, Milwaukee-Eight, Sportster, Evolution, Indian, and Victory V-Twins. JASO MA2 certified, Harley-Davidson 360 spec, MoCo H-D primary chaincase compatible.

    8 productsMCV, MCVQT, MVI, MVT
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    AMSOIL Street & Adventure Oil

    Sport, Cruiser, Touring & ADV

    Street & Adventure Oil

    Synthetic metric motorcycle oil for Honda, Yamaha, Kawasaki, Suzuki, Ducati, BMW, KTM, Triumph, and Aprilia street bikes, sport tourers, cruisers, and adventure bikes. Available in 10W-30, 10W-40, 15W-50, and 20W-50.

    5 productsMCT, MCF, MFF, MTI
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    AMSOIL Dirt Bike Oil

    Motocross & Off-Road

    Dirt Bike Oil

    Synthetic 4T dirt bike oil for four-stroke MX, enduro, and off-road. JASO MA2 certified for wet-clutch performance — Honda CRF, Yamaha YZF, Kawasaki KX-F, Suzuki RM-Z, KTM SX-F/EXC, Husqvarna FC/FE, GASGAS, and Beta.

    3 productsDB40, DB50, MCF
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    Motorcycle Oil Application Selector

    Match your motorcycle to the recommended AMSOIL synthetic oil and AMSOIL product code. For exact part numbers by year, make, and model, also see the AMSOIL Motorcycle Lookup.

    BikeRecommended AMSOILIntervalNotes
    Harley-Davidson Twin Cam, Milwaukee-Eight (touring & cruiser)20W-50 V-Twin (MCV) + V-Twin Primary Fluid (MVP) + V-Twin Transmission Fluid (MVT)5,000 mi (engine), 20,000 mi (primary/trans)Three-fluid system — separate engine, primary, and transmission lubricants required.
    Harley-Davidson Sportster (Evolution & Revolution)20W-50 V-Twin (MCV) — engine, primary, and transmission share oil5,000 mi (combined sump)Sportsters share one oil for engine, primary, and trans. Use V-Twin engine oil.
    Indian Chief, Chieftain, Roadmaster (Thunderstroke 111/116)20W-50 V-Twin (MCV)5,000 mi or per service indicatorIndian-approved synthetic 20W-50.
    Honda CBR, CB, Gold Wing (street & touring)10W-30 (MCT) or 10W-40 (MCF) Synthetic Metric5,000–7,500 mi or OEMConfirm viscosity in owner's manual.
    Yamaha YZF-R1/R6, FZ, MT, Tracer10W-40 (MCF) or 15W-50 (MFF) Synthetic Metric5,000 mi or OEMYamaha YZF-R1 typically calls for 10W-40 or 15W-50.
    Kawasaki ZX-6R, ZX-10R, Versys, Z90010W-40 (MCF) Synthetic Metric5,000 mi or OEMKawasaki standard JASO MA2.
    Suzuki GSX-R, V-Strom, Hayabusa10W-40 (MCF) Synthetic Metric5,000 mi or OEMSuzuki Performance (SUZ) 10W-40 spec.
    Ducati Panigale, Multistrada, Monster, Diavel15W-50 (MFF) Synthetic MetricOEM (typically 7,500 mi)Ducati specifies 15W-50 for most L-Twin and V4 models.
    BMW R-series boxer, S 1000 RR, F 850 GS10W-40 (MCF) or 15W-50 (MFF)OEM (6,000–10,000 mi)BMW Motorrad JASO MA2.
    KTM 1290 Super Adventure, 890 Adventure (street/ADV)10W-50 Dirt Bike Oil (DB50) or 15W-50 Metric (MFF)OEM (typically 9,000 mi)KTM ADV bikes share dirt-bike-grade lubricant.
    Honda CRF250R, CRF450R (4T motocross)10W-40 Dirt Bike (DB40)5–10 hr (race) or 1,000 mi (rec)JASO MA2 — wet-clutch safe.
    Yamaha YZ250F, YZ450F10W-40 Dirt Bike (DB40)5–10 hr (race) or per Yamaha scheduleOutstanding shear protection.
    KTM SX-F / EXC-F / Husqvarna FC/FE / GASGAS / Beta10W-50 Dirt Bike (DB50)Per OEM (typically 15 hr race / 1,000 mi rec)European MX engines run hotter — heavier 10W-50 is recommended.

    Why AMSOIL Motorcycle Oil

    • JASO MA2 certified across the entire motorcycle line — wet-clutch safe
    • Dedicated formulas for V-Twin, metric, and dirt bike — not adapted from car oil
    • Superior shear stability for high-RPM sport bikes and motocross
    • Outstanding heat resistance for air-cooled V-Twins and ADV touring
    • LSPI-protected for modern direct-injection liquid-cooled engines
    • Cleaner engines with extended drain capability
    • Warranty-safe under Magnuson-Moss for Harley-Davidson and all metric brands
    • Backed by the AMSOIL Limited Warranty

    Best Synthetic Motorcycle Oil for Harley-Davidson, Sport, ADV & Dirt Bikes

    Motorcycles share their engine oil with the wet clutch and (in many cases) the transmission — so the oil has to do three jobs that a car oil was never designed for: lubricate at sustained high RPM, protect a wet-clutch friction surface, and survive the high temperatures of an air-cooled V-Twin or a 14,000-RPM inline-four. Using a car oil with friction modifiers will glaze your clutch and cost you horsepower.

    Every AMSOIL motorcycle oil is JASO MA2 certified, the global wet-clutch standard. Our V-Twin lineup is built around the air-cooled, oil-cooled, and Twin-Cooled Harley-Davidson Twin Cam, Milwaukee-Eight, Sportster, Evolution, Indian Thunderstroke, and Victory engines. Our metric lineup covers Honda CBR/CB/Gold Wing, Yamaha YZF/MT/FZ, Kawasaki ZX/Z, Suzuki GSX-R/V-Strom, Ducati Panigale/Multistrada, BMW R/S/F-series, KTM 1290/890 Adventure, Triumph, and Aprilia. Our dirt bike line (DB40 and DB50) is purpose-built for four-stroke MX and enduro from Honda CRF, Yamaha YZ-F, Kawasaki KX-F, Suzuki RM-Z, KTM SX-F/EXC, Husqvarna FC/FE, GASGAS, and Beta.

    Motorcycle Oil for Florida, Tampa Bay & the United States

    1stSynthetic.com is your independent AMSOIL Dealer based in Dade City, Florida, serving Harley, sport bike, ADV, and dirt bike riders across Tampa, Lakeland, Wesley Chapel, Zephyrhills, Brooksville, Brandon, Sarasota, Orlando, Daytona, and the entire United States. Order online and ship direct from the AMSOIL distribution center, or join the Preferred Customer program to save 25% on every motorcycle oil order, every time.

    Motorcycle Oil FAQ

    How do I choose the right AMSOIL motorcycle oil?▾
    Match the oil to your bike type and the viscosity in your owner's manual. For Harley-Davidson and American V-Twins, use 20W-50 V-Twin (product code MCV). For Japanese and European street bikes, use 10W-30 (MCT), 10W-40 (MCF), or 15W-50 (MFF) Metric Motorcycle Oil. For four-stroke dirt bikes, use 10W-40 Dirt Bike (DB40) for Japanese MX and 10W-50 (DB50) for KTM, Husqvarna, GASGAS, and Beta.
    Can I use car oil in my motorcycle?▾
    No. Modern automotive engine oils (API SN/SP, ILSAC GF-6) contain friction modifiers that cause wet-clutch slip in motorcycles, leading to clutch glazing, lost power, and failure. You also lose shear stability under high-RPM motorcycle conditions. Always use a JASO MA2 certified motorcycle oil — every AMSOIL motorcycle oil is JASO MA2 certified and wet-clutch safe.
    What does JASO MA2 mean?▾
    JASO MA2 is the Japanese Automotive Standards Organization wet-clutch certification — the global benchmark for motorcycle engine oil. MA2 oils have the correct friction characteristics for wet clutches and meet stricter performance criteria than older JASO MA. Every AMSOIL motorcycle engine oil is JASO MA2 certified, so it's safe for any wet-clutch motorcycle.
    Are AMSOIL motorcycle oils warranty-safe for Harley-Davidson, Honda, Yamaha, Kawasaki, Suzuki, Ducati, BMW, KTM, Triumph, and Aprilia?▾
    Yes. AMSOIL motorcycle oils meet or exceed the specifications required by every major OEM. The federal Magnuson-Moss Warranty Act (15 U.S.C. § 2302) prevents a manufacturer from voiding your warranty for using a qualifying aftermarket lubricant. AMSOIL backs every motorcycle oil with the AMSOIL Limited Warranty.
    Does my Harley-Davidson really need three different fluids?▾
    Yes — Twin Cam, Milwaukee-Eight, and most touring Harleys have three separate sumps: engine, primary chaincase, and transmission. Each requires its own purpose-built fluid: AMSOIL 20W-50 V-Twin Engine Oil (MCV), V-Twin Primary Fluid (MVP), and V-Twin Synthetic Transmission Fluid (MVT). Sportsters are the exception — they share one sump and use V-Twin engine oil throughout.
    What viscosity does my four-stroke dirt bike need?▾
    Most Japanese MX bikes (Honda CRF, Yamaha YZ-F, Kawasaki KX-F, Suzuki RM-Z) run AMSOIL 10W-40 Dirt Bike Oil (DB40). KTM SX-F, Husqvarna FC/FE, GASGAS, and Beta four-strokes run hotter and benefit from AMSOIL 10W-50 Dirt Bike Oil (DB50). Always confirm in the owner's manual.
    How often should I change my motorcycle oil with AMSOIL?▾
    Follow your OEM service interval — typically 5,000 miles for street bikes, 5–10 hours for race-use dirt bikes, and 5,000 miles for V-Twin engine oil (with primary and transmission fluids extending to 20,000 miles). AMSOIL synthetic motorcycle oils are engineered to support — and often safely extend — these intervals when used with the AMSOIL Ea Motorcycle Oil Filter.
    Will AMSOIL motorcycle oil reduce engine heat in my air-cooled Harley?▾
    Yes. AMSOIL 20W-50 V-Twin Synthetic Motorcycle Oil has been independently tested to run cooler than competing oils in air-cooled Twin Cam and Milwaukee-Eight engines, especially in stop-and-go traffic and high-ambient-temperature riding. Cooler engines mean longer life and less power loss.
    Where can I buy AMSOIL motorcycle oil in Florida?▾
    1stSynthetic.com is your independent AMSOIL Dealer based in Dade City, Florida — serving Tampa, Lakeland, Wesley Chapel, Zephyrhills, Orlando, and the entire United States. Order online and ship direct from AMSOIL, or join the Preferred Customer program to save 25% on every motorcycle oil order.

    Ready to Order AMSOIL Motorcycle Oil?

    Shop the full motorcycle lineup with your independent AMSOIL Dealer — and save 25% as a Preferred Customer.

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