Description

Rebuild Your Honda TRX 450R Engine

The Honda TRX 450R has earned its reputation as one of the most popular high-performance sport ATVs ever built. Whether your quad is used for motocross, dune riding, trail riding, or recreation, a worn engine can keep it parked longer than you’d like. Our Build Core engine rebuild service restores your original engine so you can get back to riding with confidence.

This service is built around your original engine core. After it arrives at REV6, we inspect every major component, complete the required machining, rebuild the engine to specification, and perform a final quality inspection before it ships back to you.

Engine Rebuild Overview

• Service: Build Core Engine Rebuild
• Fits: Honda TRX 450R
• Core Required: Yes
• Warranty: 1-Year No-Fault Warranty Included
• Optional Coverage: Upgrade to our 2-Year No-Fault Warranty
• Financing: Available
• Shipping: Freight shipment coordinated by the REV6 team

Engine Restoration Process

• Complete engine teardown, cleaning, and inspection
• Cylinder head inspection and resurfacing as needed
• Camshaft lobes and journals cleaned and polished
• Cylinder bored and honed to specification
• New moly-coated piston, rings, wrist pin, and circlips
• Crankshaft inspection and rebuilding as required
• Transmission and shift assembly inspection
• Clutch assembly inspection
• Bottom-end bearing inspection
• Oil pump inspection and rebuilding as needed
• Engine case inspection for journal wear, cracks, and damage
• Final quality inspection before shipment

About the Build Core Program

This listing requires a rebuildable Honda TRX 450R engine core. Once your order is placed, our team will contact you to coordinate the shipping process and explain the next steps before your engine is sent to REV6.

Because every engine arrives in a different condition, additional replacement parts may occasionally be needed. If we discover damaged components during inspection, we’ll contact you with recommendations before completing any additional work.

Warranty & Financing

Every rebuilt Honda TRX 450R engine includes our 1-Year No-Fault Warranty. Riders looking for additional protection can upgrade to the optional 2-Year No-Fault Warranty, which provides extra peace of mind if the unexpected happens.

Learn more on our Warranty Policy. Flexible payment options are available through our Financing page.

Looking for Honda ATV Parts?

If you’re rebuilding the engine yourself, browse our Honda ATV parts catalog. You can also compare rebuild options with our Engine Rebuild Kit Guide.

Get Your TRX 450R Back in Action

Place your order when you’re ready, send us your rebuildable engine core, and we’ll return it rebuilt, inspected, and ready for installation.

REV6 is proud to offer military discounts for eligible veterans and active-duty servicemembers. Be sure to ask our team about available savings before completing your order.