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Piston, 420cc OHV & Predator (90mm), Forged Flat-Top, Stroker Applications
Piston, 420cc OHV & Predator (90mm), Forged Flat-Top, Stroker Applications


 
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Our Price: $240.00

Stock Status:In Stock

Part #: NR421
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Description -
 
90mm Forged Flat-Top Piston for 420cc OHV, 420 Predator, and +.080 Over GX390
Stroker Version - Piston has .050 shorter compression height to fit ARC Stroker Cranks

90mm bore piston (+.080 for GX390) with standard compression height. Use with +.040 rod for maximum compression. Pistons have valve reliefs for high-lift cams to fit both Honda & Hemi heads.

  • Bore: 90mm (3.563")
  • Clearance: .0025" (@ .850 down from oil land)
  • Pin Height: .050" lower than stock for stroker cranks

*Wrist pin and clips included. Rings not included. For rings, order part RINGSET-90-076076106.

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