460cc Go Kart Racing Engine - DIY Assembly
460cc Go Kart Racing Engine - DIY Assembly
460cc Go Kart Racing Engine - DIY Assembly

460cc Go Kart Racing Engine - DIY Assembly

PART NO: VRX46-DIY

Regular price $399.99 Sale

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.

  • Heavy Duty 10-Bolt Engine Block (Modified Extra-Thick & Reinforced Casting) - The strongest clone engine block on the market!
  • 92mm Bore x 69mm Stroke
  • Billet 4.51" Rod w/Bearing Included
  • Flat Top Piston Included
  • Adjustable Tuned Carb Included
  • 35lb HD Valvesprings Included
  • Chromoly Pushrods Included
  • Uses all GX390 Performance Parts (Cams, Valvetrain, etc)
  • Electric Starter NOT included (Block has all provisions to install one)

The builder kits are designed for those who are advanced or experienced engine builders. We can only provide minimal tech support.

Install Guide

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