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460cc Go Kart Racing Engine - Barebones Builder Kit
460cc Go Kart Racing Engine - Barebones Builder Kit

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Our Price: $249.99

Quantity in Stock:98

Availability:: Usually Ships in 24 Hours
Product Code: VRX46-BKIT


Connecting Rod:





460cc Go Kart Racing Engine - Barebones Builder Kit

These engines are custom made to our specifications and are the only 458cc Honda GX390 "big bore clones" available for purchase in the United States.

This kit doesn't include Piston, rings, rod, cam, valvetrain, pull starter or balance shaft. If you need those pieces, we do sell them individually.

  • Heavy Duty 10-Bolt Engine Block (Modified Extra-Thick & Reinforced Casting) - The strongest clone engine block on the market!
  • 92mm Bore x 69mm Stroke
  • Uses all GX390 Performance Parts (Cams, Valvetrain, etc)
  • Available WITHOUT Electric Starter ONLY

The builder kits are designed for those who are experienced builders/racers and/or building an open motor in which many of the stock components will not be used.

Why throw away the stock parts when you dont have to buy them in the first place??? Our builder kit includes the following:

  • 1 - 92mm Crankcase w/Removable Electric Starter Cover
  • 1 - 10-Bolt Side Cover
  • 1 - 69mm Crankshaft w/1" PTO
  • 1 - Bare Cylinder Head
  • 1 - MLS Headgasket
  • 1 - Valve Cover w/Bolt
  • 2 - Lifters
  • 1 - Ignition Coil
  • 1 - Fan Shroud w/Aluminum Recoil Cover
  • 1 - Billet 32mm Intake Manifold
  • 1 - Set of Gaskets, Seals & Bolts

*4.51" Rods are ONLY compatible with the Flat-Top Cast Piston

*4.45" Rods are ONLY compatible with the Forged Pistons

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