We are super excited and honored to partner with the legend, Ray Pampena and offer his Spec Ross Pistons
92mm Standard Compression in Stock for
Specify stroke for correct piston pin offset height.
Optional Compression Ratios
Please consult your engine shop for your bore requirements.
DO NOT bore your engine before receiving your pistons and taking the proper measurements for piston to wall clearance recommended by ROSS and your machine shop.
Piston sizes are approximate, and all pistons should be measured by a competent engine assembler/machine shop and then pistons should be bored and honed to proper size.
NOTE: We do get the questions about ordering these in the stock bore sizes, 91.1mm for the 6G72 and 93mm for the 6G74. We do not suggest this. The biggest issue is the fact that the factory bore never cleans up with a cleanup hone perfectly. Since the cost of a bore and hone is not much more than a hone, there is not a good reason to use a set of pistons in standard bore. When you realize that the bore looks terrible after a cleanup hone and you have already ordered your pistons, it is too late.
These Pistons are NON-RETURNABLE once ordered.
These are a special order item.
