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AMSOIL Race-Proven Dirt Bike Oil

Premium synthetic motorcycle oil engineered for motocross, enduro, and hard trail riding. AMSOIL delivers maximum engine protection, reduced wear, and extended drain intervals for 2-stroke and 4-stroke dirt bikes. Trusted by professional racers and weekend riders.

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50+

Years of Innovation

#1

In Synthetic Oil

1000s

Pro Riders Trust

100%

Synthetic Formula

Why Use AMSOIL for Your Dirt Bike

AMSOIL pioneered synthetic lubrication technology in 1972. Today, our dirt bike oils deliver unmatched protection and performance that conventional oils simply cannot match.

🏍️

High-RPM Engine Protection

Dirt bike engines rev to 14,000+ RPM and run hotter than street bikes. AMSOIL synthetics maintain critical film strength when conventional oil fails, protecting your expensive engine from catastrophic wear.

🔥

Extreme Heat Resistance

Tight single-track trails and hard motocross racing cook your engine. AMSOIL resists thermal breakdown and oxidation at extreme temperatures, maintaining protection when other oils turn to sludge.

⏱️

Extended Drain Intervals

Change oil less frequently with AMSOIL. Our synthetics last 2-3x longer than conventional oils, saving you time, money, and reducing waste oil. More riding, less wrenching.

💨

Cleaner Running Engine

Superior detergents and dispersants keep pistons, rings, and valves clean. Reduced carbon deposits mean consistent power, easier starting, and longer engine life.

💪

More Horsepower

Reduced friction from advanced synthetic formulations means more power reaches the rear wheel. Feel the difference in acceleration and throttle response.

🏆

50+ Years of Innovation

AMSOIL produced the world's first API-qualified synthetic motor oil in 1972. Five decades of synthetic lubrication leadership and racing heritage you can trust.

Product Lineup

Complete synthetic lubrication for 2-stroke and 4-stroke dirt bikes. Click any product for details and pricing.

AMSOIL 10W-40 Synthetic Dirt Bike Oil

10W-40 Synthetic

All-around protection for 4-stroke dirt bikes. Ideal for normal to severe riding conditions.

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AMSOIL 10W-50 Synthetic Dirt Bike Oil

10W-50 Synthetic

Hot weather and high-performance riding. Superior protection for extreme conditions.

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AMSOIL 10W-60 Synthetic Dirt Bike Oil

10W-60 Synthetic

Extreme conditions and racing applications. Maximum viscosity for hard use.

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AMSOIL Dominator 2-Stroke Racing Oil

Dominator 2-Stroke

Clean-burning formula for motocross. Maximum power and minimal deposits.

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AMSOIL Synthetic Dirt Bike Transmission Fluid

Transmission Fluid

Smooth shifting and maximum protection. Formulated for dirt bike gearboxes.

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AMSOIL Black Oil Filter EAOM

Black Oil Filter

High-efficiency filtration for 4-stroke engines. Standard size for most dirt bikes.

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AMSOIL Chrome Oil Filter EAOMC

Chrome Oil Filter

Compact size for tight spaces. Chrome finish looks great in your engine bay.

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WIX XP Oil Filter

WIX XP Filter

Premium filtration with synthetic media. Excellent flow and filtration efficiency.

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AMSOIL Motorcycle Octane Boost

Octane Boost

Increases octane for high-compression engines. More power and smoother running.

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AMSOIL Gasoline Stabilizer AST

Gas Stabilizer

Keeps fuel fresh for up to 12 months. Essential for seasonal storage.

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AMSOIL Quickshot Gasoline Treatment

Quickshot

Cleans injectors and carburetors while stabilizing fuel. Complete fuel treatment.

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AMSOIL Shock Therapy 5 Light Suspension Fluid

Shock Therapy 5

Light suspension fluid for forks. Consistent damping in all conditions.

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AMSOIL Shock Therapy 10 Medium Suspension Fluid

Shock Therapy 10

Medium suspension fluid for shocks. Optimal performance for most setups.

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AMSOIL Chain Lube

Chain Lube

Sticky formula stays on your chain. Protects against wear and corrosion.

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AMSOIL Mudslinger Mud and Dirt Repellent

Mudslinger

Repels mud and dirt from plastics. Makes cleaning your bike easier.

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Which Oil For Your Bike?

Tell us your make, model, and riding style. We'll recommend the perfect oil and change interval for your setup.

🏍️ Look Up Your Bike Contact Us

Purchase Options

Flexible purchasing options to fit your needs. From wholesale pricing to one-time purchases.

Best Value
💰

Preferred Customer

Wholesale pricing with 25% discount

  • ✓ 25% off retail pricing
  • ✓ Free shipping on orders $100+
  • ✓ No minimum order requirements
  • ✓ Auto-ship discounts available
  • ✓ 15% off first order
$15

/ 6 months

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🛒

Retail Purchase

Standard retail pricing

Standard retail pricing for one-time or occasional purchases. No registration or commitment required. Perfect for trying AMSOIL products or buying specific items as needed.

  • ✓ No registration required
  • ✓ Order anytime
Shop Now
🏢

Commercial Account

For fleets and businesses

Business purchase option for fleets and commercial operations. Ideal for construction companies, farms, government fleets, and equipment managers who need bulk pricing and dedicated support.

  • ✓ Volume pricing
  • ✓ Dedicated support
Learn More
🏪

Retail Store Account

Sell AMSOIL in your store

  • ✓ Stock products on your shelves
  • ✓ Retail markup pricing
  • ✓ Marketing materials provided
  • ✓ Ideal for powersports shops
Learn More
🤝

Dealership Option

Become an AMSOIL Dealer

  • ✓ Wholesale pricing
  • ✓ Earn commissions
$100

/ year

Learn More

Rider Testimonials

Real feedback from motocross racers and trail riders who trust AMSOIL.

"Switched to AMSOIL 10W-50 in my CRF450R and the difference is night and day. Engine runs noticeably cooler after long motos, and I'm getting smoother shifts. Been running it for a full season now with zero issues."

— Mike R., Motocross Racer

"I ride hard enduro trails in West Virginia. AMSOIL has never let me down in my KTM 300. The 2-stroke oil burns clean with minimal smoke, and my piston looks brand new after 6 gallons. Worth every penny."

— Sarah K., Trail Rider

"Been using AMSOIL in my shop bikes for 3 years. Extended drain intervals save me time, and I haven't had a single engine issue. Customers love the results. Great product, great support."

— Dan T., Shop Owner

Google Reviews

Read real reviews from dirt bike riders who trust AMSOIL for their off-road motorcycles.

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Contact Us

Questions about which oil is right for your bike? Need help with an order? We're here to help.

📞 Phone: (763) 213-9163

📧 Email: amsoilsyntheticoilproducts@gmail.com

Hours: Mon-Fri 8AM-6PM

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