1999-2014 TRX 400EX R Series Head Pipe (BIG09-1431)

The Big Gun EVO R Series Head Pipe for the 1999–2014 Honda TRX 400EX and 400X is built upon a rich heritage of racing and power development. Designed for riders seeking to maximize the output of their sport ATV, the EVO R series is a tried-and-true performance upgrade. This head pipe is engineered to reduce overall vehicle weight while providing noticeable gains in horsepower and torque, all while delivering a significantly improved exhaust note compared to the restrictive factory setup.

Features

• Performance Heritage: Developed through years of off-road and MX racing experience to ensure maximum exhaust flow.
• Weight Savings: Constructed from lightweight materials to reduce the overall mass of the exhaust system.
• Increased Power: Specifically designed to optimize engine breathing, resulting in measurable performance gains across the powerband.
• Improved Sound: Enhances the acoustic character of the TRX 400EX/X for a deeper, more aggressive exhaust note.
• Durable Construction: Built to withstand the high temperatures and vibrations associated with high-performance sport ATV riding.

Compatibility

• Fits 1999–2008 Honda TRX 400EX.
• Fits 2009–2014 Honda TRX 400X.

Notes

• This is the head pipe section only.
• For best results, it is designed to be paired with a Big Gun EVO R Series muffler to create a complete full system.