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Engine Kit, GX390/420, 440cc, +.200 Billet Crank, 90mm Forged Piston

Engine Kit, GX390/420, 440cc, +.200 Billet Crank, 90mm Forged Piston

$
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Crankshaft Balancing(required):
Product Code: NR-STRKIT-440-F
420cc Engine Kit for GX390
The ultimate kit for high-revving GX390s!
  • Billet steel crank, producing 440cc
  • ARC billet rod
  • Forged Diamond 90mm flat-top piston
  • Piston rings
  • Tool steel wrist pin & clips

Puts piston at TDC. *Note: This is not a bolt-in kit, but for experienced engine builders. Available unbalanced or fully balance (not needed for most applications).

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