Piston, 90mm Flat-Top for 420 OHV & GX390 Type Engines
$
$24.99
Savings: $
Product Code: 420PISTONKIT
90mm Aftermarket Flat-Top Piston for Big Bore GX390s Fits stock bore on 420 Predators (non-hemi). GX390 blocks can be bored to accept this piston. Includes piston and rings (pin and clips not included).
407cc with Stock Crank
433 with +.160 Stroker Crank
440cc with .200 Crank
*Picture is for reference only. Actual part may be slightly different.
