Billet Flat-Top Diamond Piston to Fit 420cc OHVs, 420 Predators, and +.080 Over GX390s
High-quality 90mm bore piston (+.080 for GX390) with standard compression height. Use with a +.040 rod for maximum compression. Pistons have valve reliefs for high-lift cams to fit both Honda and hemi heads.
*Wrist pin and clips included. Rings not included. For rings, order our part # RINGSET-90-076076106. 
