1999 Honda TRX300 FourTrax 300 Oil Change Kit - Correct Fit and OEM

In this review of the 1999 HONDA TRX300 FOURTRAX 300 OIL CHANGE KIT the bottom line is simple: this kit is for owners who want a correct, OEM-based service for a FourTrax 300 without hunting parts separately. The kit bundles three quarts of Honda GN4 10W-40 motorcycle oil with a genuine Honda OEM oil filter and a crush washer, so the single biggest reason to buy is convenience coupled with factory-spec fluids and parts that match the engine's needs. For DIY maintenance and periodic service stops, this kit removes uncertainty about oil grade and filter compatibility.

Key Features

• Factory-grade oil: Includes three quarts of Honda GN4 10W-40 formulated for motorcycle engines to maintain viscosity stability and protect gears and clutch components where applicable.
• OEM filter included: The genuine Honda oil filter ensures a fit and filtration level designed for the TRX300's tolerances and flow rate.
• Crush washer supplied: The included crush washer helps achieve a proper drain plug seal and reduces the chance of leaks after installation.
• Correct oil quantity guidance: The kit supplies 3 quarts while the engine oil capacity is approximately 2.8 qts, giving a small spare amount for topping up or ensuring full fill.
• Proven GN4 formula: GN4 has long standards for cleanliness and shear resistance, which supports steady engine performance over routine service intervals.

Who It's For

This kit is aimed at owners of 1999 Honda TRX300 FourTrax 300 ATVs who perform their own oil service or want a simple parts-and-fluid package to hand to a mechanic. It is also useful for DIYers who value using factory-recommended fluids and an OEM filter to maintain original equipment standards.

It is not intended for riders seeking synthetic-only oil upgrades, high-performance race lubricants, or those who need more than a basic oil change kit such as air filters, spark plugs, or heavy-duty seals. Buyers who prefer mixed-brand components or customized oil grades should look elsewhere.

Pros & Cons

Pros

• Factory-specified Honda GN4 10W-40 offers reliable, tested viscosity and cleanliness for motorcycle engines.
• Genuine Honda oil filter matches the TRX300's fit and filtration requirements for correct engine protection.
• Includes a crush washer to help prevent drain plug leaks after service.

Cons

• Contains conventional GN4 oil rather than a modern full synthetic option, which some users seeking maximum longevity may prefer to upgrade from.

Specifications

Our Verdict

The 1999 Honda TRX300 FourTrax 300 Oil Change Kit is a practical, good-value option for owners who want factory-spec oil and an OEM filter in one package. It saves time sourcing parts and reduces the chance of fitment issues, making it a sensible buy for regular maintenance. Those seeking full synthetic performance should consider a different oil, but for correct, convenient service this kit is hard to beat.

Frequently Asked Questions

Is the oil in this kit the correct grade for the TRX300?
Yes, the kit includes Honda GN4 10W-40, which matches the manufacturer-recommended viscosity for this model.

Does the kit include everything needed to complete an oil change?
The kit includes oil, an OEM oil filter, and a crush washer; you will still need basic tools and a drain pan.

Can I use the remaining oil if I only need 2.8 qts?
Yes, the kit supplies 3 quarts so there will be a small remainder suitable for topping up later.