A 12-volt lead-acid battery in the 7–9 Ah range is typically recommended, with YTX9-BS or an equivalent size being the most common aftermarket option for the 1995 Honda FourTrax 300.
The 1995 FourTrax 300 uses a compact 12-volt electrical system that relies on a reliable crank and steady charging. Battery size, capacity, and terminal layout all impact starting performance and fit in the tray. This article outlines typical sizes, fit considerations, and buying options, plus practical steps to verify compatibility with your bike.
Battery size and fit for the TRX300
Here are typical battery sizes that fit the TRX300 chassis and what to consider when choosing capacity and fit.
- YTX9-BS (12V, about 9 Ah) — The most common aftermarket replacement; generally fits the stock tray and terminal arrangement, but always confirm measurements before purchasing.
- YTX7-BS (12V, about 6–7 Ah) — A smaller option that can fit in tighter trays; may provide adequate starting power in mild conditions but could be marginal in cold starts.
- OEM Honda replacement (stock-class dimensions) — Ensures a factory‑matched fit; verify the exact part number and dimensions in the dealership catalog or service manual for your model year.
In practice, most TRX300 riders opt for the 9 Ah class (YTX9-BS) to balance reliable starting performance with a wide availability of replacement options. If space is particularly tight, a 7 Ah model can be considered, but you should recheck starting performance and wiring clearance after installation.
Fitment notes
The important fit factors are overall dimensions, terminal layout, and mounting points. Even a battery with the same Ah rating can differ in length, width, or post placement, which may require a different mounting strap or adapter. Always compare the battery’s measurements and terminal orientation to the original battery and the TRX300’s battery tray diagram.
How to verify fit and buy the right battery
Use these steps to confirm the battery you buy matches your 1995 TRX300’s tray, wiring, and mounting:
- Measure the battery tray dimensions (length, width, height) and compare with the external dimensions of any replacement you’re considering.
- Check terminal layout: ensure the positive and negative posts align with your wiring harness and that cables won’t require excessive bending or strain.
- Confirm mounting provisions: verify strap location, bracket compatibility, and any needed spacers or adapters.
- Ensure the battery type is a sealed lead-acid (maintenance-free) unit suitable for outdoor use and seasonal storage.
- Consult the service manual or a parts catalog for the exact OEM specification to confirm you’re selecting the correct size for your VIN and model year.
By following these checks, you’ll minimize the chance of selecting a battery that doesn’t fit or deliver expected cold-start performance. If you’re unsure, contact a Honda dealer or consult the TRX300 parts diagram for the precise OEM dimensions.
Summary
The 1995 Honda FourTrax 300 generally runs on a 12-volt lead-acid battery in the 7–9 Ah range, with the YTX9-BS being the most common aftermarket choice due to its reliable balance of size and power. Always verify tray dimensions and terminal orientation before purchase, and consider OEM specifications for a guaranteed fit. Proper selection supports reliable starting, steady charging, and longer battery life for vintage TRX300 models.