Go

Honda GX340 / GX390 / GX420

Honda GX390, GX340 & GX420 Engine Parts – Maximize Power, Efficiency & Reliability

Empower your Honda GX390, GX340, and GX420 engines with high-performance parts and upgrades that bring out their full potential. These engines are known for their reliability, strength, and versatility, powering a wide range of applications from heavy-duty industrial equipment to off-road recreational vehicles. Our selection of parts for the GX390, GX340, and GX420 models offers the quality and innovation you need to optimize performance, boost power, and increase efficiency.

Differences Between GX390, GX420, GX460, and GX340

Each of these engines varies in terms of displacement, power output, and application suitability:

  • Honda GX390: Offers excellent mid-range performance with 389cc displacement, commonly used in industrial and commercial applications.
  • Honda GX420: An upgraded version of the GX390 with 420cc displacement, providing more horsepower and torque for demanding tasks.
  • GX460 Honda: The most powerful option with a 460cc displacement, ideal for high-performance applications requiring maximum output.
  • Honda GX340: A reliable choice with 337cc displacement, perfect for smaller applications needing efficiency and durability.

Performance Parts for Honda GX Series Engines

Enhancing the performance of your Honda GX engine requires high-quality aftermarket parts. Below are some of the best upgrades available.

  • 27-3464 GX390 STD 88MM (-.050) Stroker Piston Kit

    27-3464 GX390 STD 88MM (-.050) Stroker Piston Kit

    Stroker applications (-.050)Shorter compression height. Std bore 3.464 Clearance .0025 (@.850 down from oil land). Use stock GX390 UT1 T3 rings Use enclosed wristpin (Can also use GX390 wristpin, but must be shortened) Comes with Piston, Wristpin and 2...
    руб24 215,45
    Add to Cart The item has been added
  • 5886 GX340/GX390 Starter Cover

    5886 GX340/GX390 Starter Cover

    Cover for starter hole on Honda GX340/GX390 blocks for those not using an on-board starter.  Will work on Predator 420 and Vegas 460cc blocks
    руб807,18
    Add to Cart The item has been added
  • 6055 ARC Billet Oil Cap

    6055 ARC Billet Oil Cap

    (4)

    Billet Oil Fill Cap w/ O-Ring  Fits ALL ARC Billet sidecovers.  Threaded 3/4"X 10. ***WILL NOT FIT HONDA/CLONE OR PREDATOR SIDECOVERS***
    руб821,31
    Add to Cart The item has been added
  • 6059 Honda GX390/420 Billet Sidecover 6059 Honda GX390/420 Billet Sidecover

    6059 Honda GX390/420 Billet Sidecover

    (1)

    Honda GX390/420 billet sidecover. Machined from 6061-T6 aircraft grade aluminum features dual crank bearings and cam bearing for extra support. Uses all 4 dowel pens in the block for extra block support. A must for all modified and stroker applications...
    руб22 192,45
    Add to Cart The item has been added
  • 6272 ARC Billet Rods, Honda GX340/390/420 4.41" X 1.419" X .788"

    6272 ARC Billet Rods, Honda GX340/390/420 4.41" X 1.419" X .788"

    (2)

    ARC billet stock replacement connecting rod for the Honda GX390. 4.410" center to center for a 1.416" crank pin and a .788" wrist bore. Manufactured from domestic 7075-T651 aluminum and uses 5/16" rod bolts designed and produced by ARP. Also comes with...
    руб15 129,61
    Add to Cart The item has been added
  • 6274 Billet Rod Honda GX340/390/420 4.450" X 1.419" X .788"

    6274 Billet Rod Honda GX340/390/420 4.450" X 1.419" X .788"

    (2)

    ARC billet +.040" long connecting rod for the Honda GX390. 4.450" center to center for a 1.416" crank pin and a .788" wrist bore. Manufactured from domestic 7075-T651 aluminum and uses 5/16" rod bolts designed and produced by ARP. Also comes with custom...
    руб15 129,61
    Add to Cart The item has been added
  • 6382 HP Rod Bolt Set 5/16-24x1.5

    6382 HP Rod Bolt Set 5/16-24x1.5

    (1)

    Rod Bolt Set,  5/16-24 X 1-1/2" 12pt 170k tensile strength. This ARC rod bolt set comes with bolts specifically designed for ARC Racing by ARP, the world leader in performance fastners. The bolts feature rolled threads and are maufactured from 8740...
    руб1 916,05
    Add to Cart The item has been added
Compare (0)

Why Choose ARC Racing for Your Honda GX Series Parts?

ARC Racing is a trusted name in high-performance engine components, offering superior parts designed for maximum performance and longevity.

Designed for Maximum Performance and Longevity

Every component from ARC Racing is engineered to enhance performance while ensuring durability and reliability under extreme conditions.

Trusted by Racers and Enthusiasts Worldwide

Professional racers and hobbyists alike rely on ARC Racing parts for their GX390, GX420, GX460, and GX340 engines.

Superior Quality Control and Testing Standards

ARC Racing parts undergo rigorous testing to meet the highest industry standards, ensuring optimal performance and reliability.

FAQs

What Makes the Honda GX390 Ideal for High-Performance Applications?

The GX390’s robust design, high displacement, and availability of performance parts make it a top choice for racing and heavy-duty applications.

Can I Upgrade My Honda GX340 to GX390 or GX420 Parts?

Yes, many components from the GX390 and GX420 can be used to upgrade a GX340 for increased performance.

How Do I Maintain My Honda GX Engine After Upgrading?

Regular maintenance, including oil changes, air filter replacements, and proper tuning, will keep your upgraded Honda GX engine running at peak performance.

 

Contact ARC Racing for Expert Advice and Custom Solutions

Our team of experts is ready to assist you in selecting the best performance upgrades for your Honda GX engine.


Contact Us

!