honda trx300ex

Honda TRX 300EX Sportrax (Specs and Review)

In the realm of off-roading, the Honda 300EX is considered a legend, and it has well earned its status as one of the most dependable and capable all-terrain vehicles (ATVs) ever produced. The 300EX is an all-terrain vehicle (ATV) that can handle practically any terrain because to its potent engine, highly developed suspension, and extensive feature set.

The Honda Sportrax 300EX is a sporty all-terrain vehicle (ATV) manufactured by Honda, a renowned Japanese company. Introduced in 2004, this ATV is designed for sport riding and offers a range of features that make it suitable for riders aged 16 and above. Priced at $4,499, the Sportrax 300EX provides an exciting and affordable option for ATV enthusiasts.

Although the Honda TRX300EX did not directly contribute to the development of the race-winning TRX450R, it did play a role in the resurrection of the sport ATV market segment. After all, it is the forerunner to the highly regarded Honda 400EX. But enough about high-performance devices. Let us highlight this small-displacement but ultra-reliable miracle in our guide.

A top-tier, sport-oriented bike, the Honda TRX300EX (also known as the Honda 300EX and the Sportrax) was available on the market between 1993 and 2012. The 4 has become the go-to quad for many off-roading aficionados, thanks to its 282-cm3 4-stroke engine, 5-speed gearbox with reverse, and efficient air intake location.

Honda 300EX Engine

The TRX300EX is powered by an air-cooled, single-cylinder, OHC engine that is mounted in a transverse orientation. The compression ratio is 8.9:1, while the bore-stroke ratio is 74 mm by 65.5 mm (2.91 inches by 2.58 inches).

The air-fuel mixture is managed by an oiled urethane foam air filter that is coupled to a 32-mm piston-valve carburetor with an accelerator pump (the size of which was subsequently raised to 36 mm). Piston displacement is 281.7 cm³ (17.2 in³).

The engine is built up from the factory for riding at low altitudes, which means that the carburetor settings need to be adjusted in order to accommodate riding at altitudes greater than 5,000 feet (1,500 meters). Should you choose to travel this route, you should anticipate a reduction in horsepower production of approximately 3.5 percent for every 1,000 feet (300 meters) in elevation gain. If nothing more, you should be able to enjoy respectable performance figures using the standard settings of the quadcopter.

The Honda designers and engineers have ensured that the TRX 300EX can be reliable over the years. One of the methods to ensure that it is functioning ideally is to reset the valve clearances around every 100 hours of riding time. This will ensure that the TRX 300EX can continue to be reliable over the years. In addition, if you want your vehicle to function at its best and last as long as possible, you need to make sure you change the oil in it on a regular basis.

  • Engine Type : OHC single cylinder 4 stroke air cooled
  • Bore : 74mm (2.9in)
  • Valve Train : Overhead camshaft – chain drive
    Compression Ratio : 8,9:1
  • Displacement : 281.7cc (17.2ci)
  • Engine Dry Weight : 42.8kg (94.4lb)
  • Starter Type : Electric
  • Cylinder Arrangement : Single cylinder inclined 20 degrees
  • Stroke : 65.5mm (2.6in)
  • Oil Capacity – Oil Change : 1.6L (1.7USqt; 1.4Imp qt)
  • Cylinder Compression : 1275kPa (185psi)
  • Horsepower : 21.3PS (21hp)
  • Oil Capacity – Total : 2L (2.1USqt; 1.8Imp qt)

Honda TRX 300EX Top Speed

The top speed of the Honda TRX 300EX can vary depending on various factors such as rider weight, terrain conditions, and modifications made to the vehicle.

On average, the stock Honda TRX 300EX has a top speed of around 55-60 miles per hour (88-96 kilometers per hour). However, with modifications such as aftermarket exhaust systems, air filters, and engine tuning, some riders have reported achieving slightly higher speeds.

It’s important to note that modifying the vehicle may affect its overall performance and should be done carefully and responsibly. Additionally, riding at high speeds can be dangerous, so it’s crucial to prioritize safety and adhere to the recommended speed limits and guidelines.


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