88mm Aftermarket Flat-top Piston for bore GX390s only. Use our new +.040 longer rod and compression will raise and addition .5 to 1 point (depending on how much head is milled). Flattop, .040 longer rod, .010 Head Gasket, & Mill head .050 will yield approx. 12.5 to 1 Uses 2.0 thick T2 style Honda Rings. Rings and Wrist pin Included |
