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90mm Flat Top Piston, for 420 OHV & GX390 Engines
PART NUMBER:
1602984
Availability:
Ships same day if ordered by 12PM EST
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$29.99
90mm Aftermarket Flat-top Piston for big bore GX390s. Fits stock bore on 420 Predators (non-hemi).
GX390s Blocks can be bored to accept this piston
407cc using stock crank,
433 with +.160 Stroker Cranks,
440cc with .200 Crank
Includes Piston & Rings
( Pin and Clips not included)
Picture for reference only, actual part may be slightly different

90mm Flat Top Piston, for 420 OHV & GX390 Engines
$29.99
90mm Aftermarket Flat-top Piston for big bore GX390s. Fits stock bore on 420 Predators (non-hemi).
GX390s Blocks can be bored to accept this piston
407cc using stock crank,
433 with +.160 Stroker Cranks,
440cc with .200 Crank
Includes Piston & Rings
( Pin and Clips not included)
Picture for reference only, actual part may be slightly different