0mm Aftermarket Flat-Top Piston for 420cc Predator Measures .660" from top of piston to top of wrist pin. Will fit most 390 style engines, including Hemi and OHV engines. Valve reliefs for hemi. Slight bevel. GX390 blocks can be bored to accept this piston.
407cc with Stock Crank
433 with +.160 Stroker Crank
440cc with .200 Crank
*Includes piston and rings. Pin and clips not included.
