Honda TRX400 Parts (1999-2008) | TRX400EX & TRX400X Sport

Sort by

Looking for Honda TRX400 parts? This collection includes OEM and aftermarket Honda TRX400 ATV parts for TRX400EX and TRX400X models where fitment applies. Whether you are maintaining a rider, fixing trail or dune wear, or refreshing a project quad, this page helps you find dependable Honda TRX400 replacement parts faster.

The TRX400EX/400X family became one of Honda’s benchmark sport ATVs, known for strong air-cooled four-stroke reliability, excellent handling, and long-term popularity with trail and dune riders.

Shop Honda TRX400 parts, TRX400EX parts, TRX400X parts, carburetor parts, brake parts, suspension parts, axle and wheel-service parts, clutch parts, and electrical components. Correct fitment matters because early and late 400EX/400X setups can vary in bodywork and service details.

Quality TRX400 Parts – Built for Sport ATV Service, Repair & Restoration

At Old Bike Barn, we specialize in OEM and aftermarket Honda TRX400 parts for riders who want dependable fitment and trusted quality. Whether you are refreshing a trail-ridden sport quad, replacing common wear items, or keeping a project ATV moving forward, this collection is built to make parts shopping easier.

This page includes: engine gasket sets and seal kits, carburetor or fuel-system parts, clutch and brake parts, controls, wheel and axle-service parts, suspension components, chain-drive service items, and electrical components such as ignition parts, switches, relays, and wiring essentials.

All parts are curated specifically for Honda TRX400 models where fitment applies, helping riders shop confidently for TRX400EX and TRX400X maintenance, repair, and restoration parts. Whether you are rebuilding the top end, servicing brakes, refreshing suspension, or replacing worn chassis parts after trail or dune use, we focus on proper fitment, reliable operation, and long-term durability.

Why Choose Old Bike Barn?

Hard-to-find OEM and aftermarket parts, accurate year-specific fitment, inventory curated by riders who wrench, and friendly support from knowledgeable powersports specialists — that is why riders trust Old Bike Barn for Honda TRX400 parts. We help keep Honda sport ATVs performing the way they should.