Collection: Big Block GX390 and Clones
These parts fit the 7-bolt and 10-bolt big block GX390 and it's clone platforms including Predator 420, Duromax 440, Wildcat 460, and our GX500.
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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 GX and Clone Cylinder Head Bolt Set
Regular price $7.95 USDRegular priceUnit price per -
Big Block GX and Clone Balance Shaft for 72mm Crank
Regular price $22.95 USDRegular priceUnit price per -
Big Block GX Clone Flywheel Shroud (Black)
Regular price $20.00 USDRegular priceUnit price per -
Big Block GX and Clone Side Cover Bolt Set
Regular price $14.95 USDRegular priceUnit price per -
Honda GX390 and Big Clone Wedge Head Valve Cover Gasket
Regular price $3.00 USDRegular priceUnit price per -
Big Block GX390 and Clone - 65lb Dual Valve Spring Set
Regular price $15.95 USDRegular priceUnit price per -
Big Block GX and Clone Drain Plug - Pair
Regular price $3.95 USDRegular priceUnit price per -
Big Block GX and Clone Balance Shaft Bearing - 6202
Regular price $6.00 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 and Clone JT-97 Large Port Cylinder Head
Regular price $64.00 USDRegular priceUnit price per -
Big Block GX Electric Starter Motor - GX390 - Predator 420 - Duromax 440 - Wildcat 460
Regular price $39.95 USDRegular priceUnit price per -
Big Block GX Clone Wedge Head Valve Cover
Regular price $6.95 USDRegular priceUnit price per -
Big Block GX390 and Clone - Keepers - GX390-Predator420-Duromax 440-Wildcat 460-GX500
Regular price $15.95 USDRegular priceUnit price per -
Valve Spring Shims for Big Block Wedge Head and GX390 Clones - 0.015" Thick
Regular price $4.95 USDRegular priceUnit price per -
Magnetic Oil Drain Plug For Big Block GX390 and Clones Including Predator 420/440/460/500
Regular price $4.95 USDRegular priceUnit price per -
Big Block GX ARC Billet Side Cover for 10 Bolt Blocks - 6060
Regular price $219.95 USDRegular priceUnit price per
