10 Best Synthetic Motorcycle Oil of October 2025

List of Top Rated Synthetic Motorcycle Oil from thousands of customer reviews & feedback.

Updated On Oct 2025

573 Reviews Studied

By Customer Ratings

1
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Valvoline 4-Stroke Motorcycle Full Synthetic SAE 10W-40 Motor Oil 1 QT Read Review

  • Full synthetic formula helps maximize power and acceleration
  • Formulated to provide outstanding wet clutch protection for maximum power transfer and smooth shifting
  • Added protection against harmful deposits that can decrease engine performance
  • Excellent wear and corrosion protection to help keep the engine performing its best

2
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Maxima (30-029128 Pro Plus+ 10W-40 Synthetic Motorcycle Engine Oil - 1 Gallon Read Review

  • PRO PLUS+ is designed to prolong engine and wet clutch life and offers excellent feel, smoother transmission shifting, easy starts, and improved fuel economy
  • PRO PLUS+ is an ester fortified 100 percent full synthetic 4T engine oil
  • PRO PLUS+ is formulated to exceed JASO MA requirements for 4-cycle engines with integrated wet clutches
  • Balanced Anti-wear and Anti-scuff additive system minimizes engine deposits while protecting critical engine, transmission and clutch components
  • All weather formula meets or exceeds JASO MA, API SL/SJ/SH/SG

3
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Mobil 1 98JA11 10W-40 Racing 4T Motorcycle Oil for Sport Bikes - 1 Quart (Pack of 6) Read Review

  • For best performance, follow the manufacturer's recommendations in your vehicle owner’s manual.

4
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Motul 104092 Synthetic Engine Oil Read Review

  • Meets the following standards: API SL/SH/SG and JASO MA
  • Recommended for all 4-stroke motorcycles with catalytic converters
  • Ester technology improves engine response
  • Proprietary extreme pressure formula to protect the gearbox
  • Low sulfur and phosphorus formula for bikes fitted with catalytic converters

5
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Castrol 159AE1 06080 Power RS V-Twin 20W-50 4-Stroke Motorcycle Oil - 1 Quart, (Pack of 6) Read Review

  • Formulated with Trizone technology to protect all 3 critical zones: engine, clutch and gearbox
  • Race derived technology for maximum engine acceleration
  • Extreme high temperature air-cooled performance
  • Excellent shear stability to prevent viscosity breakdown
  • Exceeds API SL and JASO MA-2

6
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Valvoline 4-Stroke Motorcycle Full Synthetic SAE 20W-50 Motor Oil 1 QT, Case of 6 Read Review

  • Full synthetic formula helps maximize power and acceleration
  • Formulated to provide outstanding wet clutch protection for maximum power transfer and smooth shifting
  • Added protection against harmful deposits that can decrease engine performance
  • Excellent wear and corrosion protection to help keep the engine performing its best

7
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Castrol 06112 POWER 1 4T 10W-40 Synthetic Motorcycle Oil, 1 Quart Bottle, 6 Pack (15D1C9) Read Review

  • Formulated with Trizone technology to protect all 3 critical zones: engine, clutch and gearbox
  • Race derived technology for maximum engine acceleration
  • Extreme high temperature air-cooled performance and water-cooled engine performance
  • Excellent shear stability to prevent viscosity breakdown
  • Exceeds API SL and JASO MA-2

8
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Lucas Oil 10054-PK6 Synthetic 20W-50 High Performance Motor Oil - 1 Quart Bottle (Pack of 6) Read Review

  • Package Dimensions: 8.75 L x 9.13 H x 7.75 W (inches)
  • Package Weight : 12.5 pounds
  • Country of Origin : United States
  • Part number: 10054

9
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Lucas Oil 10702-PK6 High Performance Synthetic 20W-50 Motorcycle Oil - 1 Quart Bottle - pack of 6 Read Review

  • Package Dimensions: 8.75 L x 9.13 H x 7.75 W (inches)
  • Package Weight : 12.5 pounds
  • Country of Origin : United States
  • Part number: 10702

10
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Valvoline 4-Stroke Motorcycle Full Synthetic SAE 10W-40 Motor Oil 1 QT, Case of 6 Read Review

  • Full synthetic formula helps maximize power and acceleration
  • Formulated to provide outstanding wet clutch protection for maximum power transfer and smooth shifting
  • Added protection against harmful deposits that can decrease engine performance
  • Excellent wear and corrosion protection to help keep the engine performing its best