TRX 400EX 400X 440 Big Bore 89mm Cylinder Hi-Performance Cam Top End Rebuild Kit

TRX 400EX/400X 440 Big Bore 89mm Performance Rebuild Kit w/ Hi-Performance Camshaft – Fits All Honda 400EX & XR400R Models

Give your Honda 400EX, 400X, or XR400R into a high-performance boost with our TRX 400EX/400X 440 Big Bore Rebuild Kit. This all-in-one top-end upgrade provides everything you need to unlock 440cc of power, reliability, and performance. With quality components that won't break the bank, this kit is designed to fit all Honda 400EX, 400X, and XR400R models and years.

Key Features:

• Aftermarket 89mm Big Bore Cylinder & 10:1 Compression Big Bore Piston Kit for enhanced horsepower and torque.
• Complete Piston Assembly including rings, wristpin, and circlips for a perfect fit and optimal performance.
• Cometic Big Bore Gasket Kit featuring a Big Bore MLS head gasket to ensure a leak-proof seal.
• High-Performance Camshaft to maximize your engine’s power output.
• SKF OEM-Grade Upgraded Cam Bearings for durability and smoother operation.
• Heavy-Duty BPRATV Timing Cam Chain – thicker and stronger than OEM/aftermarket chains for long-lasting reliability.
• New Spark Plug included to ensure a quick and efficient startup after the rebuild.

Whether you're upgrading for off-road dominance or seeking a reliable rebuild, this kit delivers outstanding performance and longevity. Boost your Honda’s power, throttle response, and durability!

✔ Fits All Honda 400EX, 400X, and XR400R Models – Any Year!
✔ Perfect for avid racers, trail riders, and those seeking a high-performance upgrade!