Honda TRX300 FourTrax 1999 Oil Change Kit with GN4 10W-40, OEM Filter

All-in-one Honda TRX300 Oil Change Kit

Keep your Honda TRX300 FourTrax running at its best with a maintenance kit that pairs trusted Honda oil with a compatible filter and crush washer. This kit includes three quarts of GN4 10W-40 four-stroke motorcycle oil, plus a Genuine Honda OEM oil filter and a crush washer, ready for a typical service on your 1999 model.

Why GN4 10W-40 stands out

Honda's GN4 line set a standard since 1975. The current GN4 10W-40 blends high-quality base stocks with a tailored additive package designed for the distinct needs of motorcycle engines. The result is a formulation that emphasizes shear resistance, viscosity stability, and cleanliness under the stresses of modern engine technology. This means the oil is built to maintain protective film strength across temperature changes and engine speeds, helping keep moving parts well-lubricated during spirited riding or extended highway hours.

Kit contents and why they matter

• Three quarts of GN4 10W-40 4-stroke motorcycle oil
• One Genuine Honda OEM oil filter
• One crush washer

Together, the components support a complete oil change process. The stated oil capacity on a typical TRX300 service is about 2.8 quarts, so having more than enough on hand helps avoid trip to the parts store mid-service. The OEM filter is designed to fit your engine precisely, while the crush washer ensures a proper drain plug seal to minimize leaks.

Real-world use and tips

• Ideal for routine maintenance or seasonal service on the 1999 Honda TRX300
• Simple, all-in-one package saves time and reduces scavenging for compatible parts
• Consistent GN4 formulation supports steady lubrication during varied riding conditions

Experience and perception: With fresh GN4 oil, you may notice a smoother start and a calmer idle as the oil film coats the moving parts. The included filter and washer promote a clean install and confident seals, which can contribute to quiet operation and predictable performance during weekend rides or daily commutes.

Compatibility and reliability

As an official Honda oil and filter kit, it aligns with Honda's long-standing standards. The GN4 line originated in 1975 and has evolved with engine technology to maintain consistent lubrication and cleanliness in four-stroke motorcycle engines.