Collection: Big Block GX Intake and Exhaust Parts
This section showcases the intake and exhaust parts we sell for the Honda GX390 engines and its clones like the Predator 420, Duromax 440, Wildcat 460, and our 500cc version.

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Big Block GX Intake and Exhaust Parts
This section showcases the intake and exhaust parts we sell for the...
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Big Block GX Cylinder Head and Valvetrain Parts
This includes all of the top end parts of the Honda GX390...
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Big Block GX Internal Engine Parts
This includes everything inside the crankcase of the Honda GX390 engines and...
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Big Block GX Flywheels, Coils, Shrouds, and Recoils
This section contains our flywheels, coils, shrouds, recoils, and other parts of...
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Big Block GX Bundles and Kits
This section includes parts kits for building and upgrading the Honda GX390...
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Big Block Clones PWK Carburetor Adapter - For JT-97 Large Port Head Casting
Regular price $29.95 USDRegular priceUnit price / per -
Big Block Clones Shawty PWK Carburetor Adapter - GX420 - Predator 420 - Duromax 440 - Wildcat 460
Regular price $29.95 USDRegular priceUnit price / per -
Big Block GX - PWK Intake Bundle - GX420-Predator 420-Duromax 440-Wildcat 460- BBC GX500
Regular price From $99.95 USDRegular priceUnit price / per -
Big Block GX Exhaust Header Pipe
Regular price $39.95 USDRegular priceUnit price / per -
Big Block GX390/420/440/460 35mm Spigot Adapter For 24-30mm PWK Carburetor
Regular price $29.95 USDRegular priceUnit price / per -
Carburetor Boot for PWK Style Carburetors
Regular price $10.95 USDRegular priceUnit price / per -
Fuel Pump Pulse Barb Fitting Kit for All BBC Intake Adapters
Regular price $9.95 USDRegular priceUnit price / per -
High Flow Air Filter Element for 55mm Carburetor Opening
Regular price $17.95 USDRegular priceUnit price / per -
PWK D-Slide Carburetor with jet kit - 24mm Through 42mm
Regular price From $49.99 USDRegular priceUnit price / per