Ross Racing Evolution 4G63 85mm Pistons
[ROSS 99873]
 Our Price: $583.63
Login for Wishlist


Description:Ross Racing Evolution 4G63 85mm Pistons
[ROSS 99873]
ROSS Mitsubishi stocking pistons are suitable for forced induction and nitrous applications. ROSS includes forced pin oilers and double spirolox on all of our stocking pistons. Pistons are balanced to plus or minus 2.5 grams throughout the set. Our valve pockets are designed to handle most camshaft applications. Our skirt design allows the pistons to work properly under intense heat and tremendous side loads without scuffing or splitting the cylinder walls. Most normally aspirated pistons are designed to operate at .004 piston skirt to cylinder wall clearance. All ROSS stocking pistons include aircraft quality pins that are heat treated and end ground to work in full floated or press fit applications.

* Compression ratio is based on factory head and gasket. (8.8:1)
* Ring grooves are 1.0, 1.2, 2.8mm.
* GEN 1 4G63 pin dia. .827, GEN 2 pin dia. .866 stroker pistons part #99869, 99870, 99871, 99872, for 4G63 GEN 1 and GEN 2 engines use 4G64 stock crankshaft with STD. 4G63 rod lgth. and block height.
* Price includes pistons, heavy duty taper wall pins, locks and rings.

Different pistons available for "stroker" and other applications (see chart below). Please contact us for information or special orders.

Export this product as a PDF Export and print this product as a .pdf file: