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Predator 420cc

When it comes to upgrading your Predator 420 engine for racing performance, ARC Racing offers top-tier components engineered for speed, durability, and reliability. Whether you're looking to enhance power output, increase RPM limits, or ensure the longevity of your engine under high-performance conditions, ARC Racing has the parts you need.

Why Choose ARC Racing for Predator Parts?

ARC Racing is a trusted name in the high-performance racing industry, known for precision-engineered components that deliver outstanding results. Here’s why racers choose ARC Racing for their Predator upgrades:

  • Premium-Quality Materials – All parts are designed with high-grade aluminum and steel for maximum durability.
  • Proven Performance – Tested and used by top racers in the industry.
  • Expert Engineering – Designed to withstand the extreme demands of competitive racing.
  • Wide Selection – From billet rods to high-performance carburetors, ARC Racing provides everything needed for a complete engine overhaul.

Frequently Asked Questions

What’s the best upgrade for a Predator racing engine?

The best upgrade depends on your performance goals, but a billet connecting rod, high-performance camshaft, and racing carburetor are among the top choices for serious racers.

Do ARC Racing parts fit stock Predator engines?

Yes, many ARC Racing parts are designed as direct replacements for stock components, though some upgrades may require additional modifications.

Are modifications legal for all racing classes?

Racing regulations vary by class and organization. Always check with your racing association to ensure compliance with modification rules.

How do I increase the RPM limit safely?

Upgrading to a billet flywheel, stronger valve springs, and a high-performance camshaft can help safely increase RPM limits while ensuring engine reliability.

Shop Performance Parts at ARC Racing

Get the best Predator racing parts from ARC Racing today. Browse our selection of high-performance components and take your engine to the next level!

  • 6615-H3 ARC Billet Flywheel, GX390 Drag PVL

    6615-H3 ARC Billet Flywheel, GX390 Drag PVL

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    6615 Drag PVL Finless Flywheel designed for drag racing engines. The 6615 flywheel utilizes Briggs and Stratton's PVL digital ignition system. It has an adjustable hub that allows timing changes at 2 degree increments in as little as 90 seconds without...
    $189.95
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  • 6617-H3 ARC Billet Flywheel,GX340/GX390 PVL

    6617-H3 ARC Billet Flywheel,GX340/GX390 PVL

    SFI certified ARC Racing 6617-H3 Finned Billet Flywheel with adjustable timing for the Honda GX340 / GX390 / 420cc / 460cc that allows the use of the 555681 Briggs and Stratton PVL digital ignition system. Includes coil bracket. Timing Hub set at the...
    $199.95
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  • 6622 Electric Start ARC Billet Flywheel

    6622 Electric Start ARC Billet Flywheel, Honda GX340/GX390

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    SFI certified ARC Racing GX390 Electric Start Adjustable Flywheel for the Honda GX340 / GX390 / 420cc / 460cc engines. The ARC Billet Flywheels are CNC machined from 6061 T-6 Aluminum. It weighs 5.40 lbs. The main feature of this design is the steel...
    $265.00
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  • 6623 ARC Billet Flywheel, GX340/390 Non-Adj.

    6623 ARC Billet Flywheel, GX340/390 Non-Adj.

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    SFI certified ARC Racing Electric Start flywheel for the Honda GX340 / GX390 / 420cc / 460cc engines. The keyway is fixed in the stock position of 24 degrees with a stock key. Will work with the stock pull rope. No coil bracket is required, uses the...
    $185.00
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  • 6623-E GX340/GX390 Electric/Pull Start Billet Flywheel

    6623-E GX340/GX390 Electric/Pull Start Billet Flywheel

    Can be used for electric or pull start! ARC Racing non-adjustable Billet SFI Certified flywheel for the Honda GX340 / GX390 / 420cc / 460cc engines is now both electric and pull start capable. The key way is fixed in the stock position of 24 degrees with...
    $235.00
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  • 6693 GX390 UT2 BILLET FLYWHEEL

    6693 GX390 UT2 BILLET FLYWHEEL

    ARC Racing Billet SFI Certified Flywheel for the Honda GX340 / GX390 / 420cc / 460cc engines. For use with the Honda UT2 style coil only. The keyway is fixed in the stock position with a stock key. Will work with the stock pull rope only.No coil...
    $185.00
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  • 6693-E GX390 UT2 Electric Start Billet Flywheel

    6693-E GX390 UT2 Electric Start Billet Flywheel

    Can be used for electric or pull start! ARC Racing non-adjustable Billet SFI Certified flywheel for the Honda GX340 / GX390 / 420cc / 460cc engines is now both electric and pull start capable. For use with the Honda UT2 style coil only. The...
    $235.00
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