Intake Manifold Boot for Honda TRX400EX & TRX400X (1999-2014)

Product Overview

Boost your ATV's power and reliability with the GOOFIT Performance Intake Manifold. Specifically engineered for the Honda TRX400, TRX400EX, and TRX400X, this inlet pipe is the critical link to achieving peak engine performance. Over time, stock intake boots can crack and leak, causing your engine to run lean and hot. Our replacement features optimized airflow runners that reduce intake resistance, allowing for superior fuel combustion. Built to handle aggressive riding, it effectively minimizes heat soak, ensuring your 400cc engine stays consistent from the first lap to the last.

Product Compatibility

Direct replacement for Honda 400cc Sport ATV engines. Please verify your model year.

Brand	Model	Fitment Years
Honda	TRX400EX	1999 – 2008
Honda	TRX400X	2009 – 2014
Honda	TRX400 Sportrax	All Years

Specifications

Feature	Detail
Application	Carburetor-to-Cylinder Head Interface
Material	High-Grade, Reinforced Heat-Resistant Rubber
Design	Smooth-Bore, Wide Runner for Low Resistance
Properties	Anti-Cracking, Oil-Resistant, Thermal Stability
Fitment Type	Direct Performance Replacement

Key Features

• Optimized High-Flow Airflow: Features redesigned, smoother, and wider internal runners that significantly reduce air resistance. This allows for a higher volume of air to reach the combustion chamber, resulting in better fuel atomization and increased horsepower.
• Durable & Heat-Resistant Design: Constructed from professional-grade rubber that is engineered for strength. This material is specifically formulated to withstand the intense heat radiating from the engine block, preventing the boot from softening or degrading.
• Reduces Heat Soak: By insulating the carburetor from the engine's heat, this manifold maintains a cooler air-intake temperature, ensuring consistent engine performance and throttle response even under heavy riding conditions.
• Leak-Proof Reliability: Provides a perfect airtight vacuum seal, eliminating the air leaks that cause erratic idling and "popping" on deceleration—common issues with old, dry-rotted TRX400 boots.
• Factory Precision Fit: Manufactured to the exact specifications of the TRX400 series for a simple, direct-fit installation. No modifications are required to your carburetor or engine head.