Engine Valve Pair for Honda ATC350X / TRX350D — high-quality aftermarket replacement valves designed to restore performance on classic Honda four-stroke models. This set includes intake and exhaust valves in pairs, engineered for reliability under demanding riding conditions. Note: Two valve pairs are required to complete one cylinder.

Vehicle Fitment

 

Product Specifications

 

OEM & Aftermarket Cross-Reference Information

OEM cross-reference numbers are provided for reference purposes only. Always verify fitment using your machine's exact model, year, and original part number before ordering.

Why Choose This Aftermarket Valve Pair?

• Direct-Fit Compatibility: Precision-engineered for Honda ATC350X (1985–1986) and TRX350D FourTrax (1986–1989) models .

• Proven Aftermarket Support: Vesrah, a respected aftermarket brand, manufactures compatible intake and exhaust valves specifically for these models:

  • GG-1017-IN and GG-1017-EX for ATC350X applications

  • GG-1021-IN for TRX350D intake applications

• Vesrah Quality: Vesrah valves undergo automated manufacturing from material shearing through final inspection, with strict quality control ensuring quality equal to or even better than OEM equipment .

• OEM Support: Genuine Honda valve guides (12233-HA5-305) are available and confirmed compatible with TRX350D models, ensuring complete rebuild options .

• Sold in Pairs: Each pair includes one intake and one exhaust valve for balanced valvetrain replacement.

• Complete Cylinder Coverage: Two pairs required to fully valve one cylinder (four valves total) for these Honda engines.

• Restores Performance: New valves improve compression, combustion efficiency, and overall engine output for these classic Honda models.

Installation Notes:

• Always check valve-to-guide clearance during installation; valve guides are available separately (part 12233-HA5-305) .

• Inspect valve seats and recut or replace if necessary.

• Use new valve seals and springs where recommended.

• Properly lap valves to ensure a gas-tight seal.

• Verify valve stem clearance falls within factory specifications.

• Follow manufacturer torque specifications for assembly.

• Two valve pairs are required to complete one cylinder for these engine configurations.

Why Upgrade?
Worn or burnt valves can cause low compression, hard starting, rough running, and loss of power—frustrations that spoil a ride. Restore your classic Honda ATC350X or TRX350D engine's performance with this quality aftermarket valve pair, designed to keep you riding with confidence.

Order your engine valve pair today and get back on the trail with confidence.