Gaskets 11
Camshafts 3
Billet SideCovers 12
Billet Flywheels 17
Billet Connecting Rods 3
Billet Crankshaft 1
Air Filters / Fuel Control & Delivery / Related 33
Stock OEM Engine Parts 6
Pistons and Rings 4
Valve Train 2
Headers / Mufflers 5
ARC Rod Bolts/Bearings 2

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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!

  • 6889RD 3.5x5 Foam Pre-Filter

    6889RD 3.5x5 Foam Pre-Filter

    (1)

    Easy to clean washable foam Pre-Filter helps your filter do it's job in overly dusty conditions.  Wash with a mild detergent and water. Let air dry in the Sun.  
    BD0.933
    Add to Cart The item has been added
  • 6898 Straight Air Filter

    6898 Straight Air Filter

    (1)

    Straight Air Filter. 3-1/2" x 4" x 2-7/16" flange diameter.  Wash with K&N filter cleaner or a mild detergent like Simple Green and water. Sling water out by hand and let air dry in the Sun ***Do Not blow out with compressed...
    BD4.976
    Add to Cart The item has been added
  • 6899 Angled Air Filter

    6899 Angled Air Filter

    (5)

    The standard angled air filter used in most 4 cycle karting engines. 3-1/2" x 4" with a 20 degree angle. The inside diameter of the mounting flange is 2-7/16". Most OHV kart engines will require an angled air filter Wash with K&N filter cleaner or a...
    BD4.558
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  • 6905 Red Fuel Line

    6905 Red Fuel Line

    (12)

    RED Fuel Line by the foot.Durable and PliableTo order, use Quantity to show how many feet of hose needed.  $0.65/foot
    BD0.290
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  • 6909 Blue Fuel Line

    6909 Blue Fuel Line

    (11)

    BLUE Fuel Line by the footDurable and PliableTo order, use quantity to show how many feet of hose needed.  $0.65/foot
    BD0.290
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  • 6929 ARC GX340/390 Air Filter Adapter

    6929 ARC GX340/390 Air Filter Adapter

    (6)

    ARC air filter adapter designed for the GX340/390 stock carburetor used on the stock GX340/390 head. This adapter comes with the air box to carb gasket part number DJ-3314, and 2 M6 x 1 Hex nuts. It does not come with a choke bracket, part number...
    BD7.050
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  • 6935 Fuel Pump, Mikuni

    6935 Fuel Pump, Mikuni

    (4)

    Mikuni DF44 Pulse Style Fuel PumpThis fuel pump operates from a vacuum pulse from either the engine's crankcase or intake manifold. Methanol or Gas.
    BD11.301
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GX200 Crankshaft Specs and Fitment

Understanding crankshaft specifications ensures proper compatibility with your engine:

  • Stock Stroke: Approximately 2.123 - 2.125 inches
  • PTO Size: Must match your clutch or torque converter
  • Rod Journal Size: Must match your connecting rod 1.180 MAX
  • Engine Compatibility: GX200 and most 196cc clone engines

Matching these specs is essential for correct installation and long-term reliability.

OEM vs Performance Crankshafts (Know the Difference)

OEM GX200 crankshafts are designed for stock engine performance and reliability.

Unlike performance crankshafts:

  • OEM crankshafts are not dynamically balanced for high RPM racing
  • They are not intended for extreme performance builds
  • They are designed for standard operating conditions and longevity

If you are building a high-performance or racing engine, a billet or performance crankshaft may be required. For standard rebuilds and everyday use, OEM crankshafts are the correct choice.

Compatible Engines and Applications

GX200 crankshafts are widely used in:

  • Honda GX200 engines
  • 196cc clone engines
  • Go-karts and minibikes
  • Utility and recreational small engines

They are ideal for restoring engines used in both work and recreational applications.

Why Choose GX200 Crankshafts

Crankshafts are manufactured for consistency and reliability:

  • Built to OEM specifications for proper fitment
  • Trusted for engine rebuilds and replacements
  • Designed for durability in standard operating conditions

Our components are relied on by engine builders and small engine enthusiasts who need dependable parts that fit correctly and perform as expected.

Find the Right GX200 Crankshaft for Your Engine

Choosing the correct GX200 crankshaft ensures your engine runs properly and reliably.

Whether you're completing a rebuild or replacing a damaged component, ARC Racing offers OEM-quality crankshafts designed for straightforward installation and long-term use.

GX200 Crankshaft FAQ

What does a GX200 crankshaft do?
It converts the up-and-down motion of the piston into rotational force to power the engine.

What is the stock GX200 crankshaft stroke?
Approximately 2.123 - 2.125 inches.

Are OEM crankshafts balanced?
OEM crankshafts are manufactured to factory balance standards but are not dynamically balanced like performance crankshafts.

Do I need a performance crankshaft?
For standard use and rebuilds, an OEM crankshaft is the best choice.

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