Modular Head Shop - 0906 Series - Plasma Moly 1.5mm x 1.5mm x 3mm

0906 Prefix - The 0906 prefix is a Total Seal Plasma Moly Top Ring Set that includes Cast Iron RBT 2nd Rings and 3 Piece SS Oil Rings. Ring Stack is 1.5mm x 1.5mm x 3mm and these Piston Rings fit the older 5 digit part number pistons that do not include a R1 suffix. The Plasma Moly Rings are good for N/A and mild Forced Induction applications up to 700-800 HP. Above that, a Steel Top Ring is recommended.