YAMAHA Yamalube 20W-40 Transmission Oil for 2-Stroke Gearboxes — 1 Quart OEM, Smooth Shifting & Gear Protection

Yamalube ACC-TRANS-PL-US is Yamaha's factory 20W-40 transmission oil formulated specifically for two-stroke motorcycle gearboxes and transmissions, sold in a one-quart OEM bottle.

When your two‑stroke Yamaha needs a lubricant engineered to match factory tolerances and shifting characteristics, this OEM Yamalube transmission oil delivers a ready-to-use solution. It’s blended for gear protection, smooth shifting, and compatibility with Yamaha clutches and internal components. Using the manufacturer-specified fluid helps maintain performance and reduces the risk of warranty or compatibility issues introduced by generic oils.

How does this oil support shifting and gearbox longevity?

Yamalube ACC-TRANS-PL-US uses a 20W-40 viscosity profile designed to preserve a stable lubricant film across operating temperatures typical for two-stroke motorcycle gearboxes. That stable film reduces metal-to-metal contact and wear while helping shifts remain consistent under load.

• 20W-40 base viscosity for steady film strength at riding temperatures
• Formulation tuned for two-stroke gearbox clearances and synchrony
• Reduces micro-wear to extend gear and bearing life
• Supports smooth, predictable shift feel under varying RPMs

Is this the correct oil for my two-stroke Yamaha transmission?

If your owner’s manual specifies Yamalube or lists a 20W-40 OEM transmission fluid for two-stroke gearboxes, this is an exact match. It is manufactured by Yamaha to meet the same specifications used in assembly and service.

• OEM part for Yamaha two-stroke gearboxes and transmissions
• One‑quart supply for service intervals or top-ups
• Designed to meet Yamaha factory compatibility requirements

How should I use and store this transmission oil?

Use during routine transmission service or when topping off the gearbox according to the service manual. Store sealed, upright, and away from extreme heat or direct sunlight to preserve additive performance and viscosity.

• Follow Yamaha service manual fill and change intervals
• Store in original container, upright and sealed
• Dispose of used oil at an approved recycling facility

What advantages does buying the Yamaha OEM product give me?

Purchasing the Yamaha-branded Yamalube ensures you receive a formula validated by the manufacturer for compatibility, additive balance, and long-term component protection. It removes guesswork versus aftermarket blends that may alter clutch or gearbox behavior.

• Factory-formulated to Yamaha specifications
• Less risk of clutch slippage or altered shift feel from incompatible additives
• Single-quart sizing convenient for individual services

Who is this for: This Yamalube ACC-TRANS-PL-US quart is aimed at owners, technicians, and restoration enthusiasts of two‑stroke Yamaha motorcycles who want a factory-specified transmission lubricant. It’s particularly useful for riders who prefer OEM fluids for consistent shifting, workshop technicians performing scheduled services, and anyone maintaining classic or modern Yamaha two‑stroke gearboxes where compatibility and reliability matter.