Wiseco 2-stroke piston ring sets are made specifically to Wiseco’s specifications to provide ultimate performance and sealing with Wiseco’s 2-stroke pistons. Ring designs and materials are tested and validated for durability and performance.

All Wiseco rings can be used in cast iron, nickel ceramic platings (Nikasil), boron composite, and Electrofusion bores.

• Set contains rings for one piston
• Correct replacement ring style is stamped on dome of piston (example: A for XA, C for XC, G for XG, and H for XH)
• Wiseco rings fit only Wiseco pistons

CS Piston ring kits contain:

Top Ring: 1.0 mm (.039”) Alloy steel, ferrox coated, chrome faced, internally notched.

CAUTION: Unless otherwise noted, Wiseco CS Series rings can NOT be used in chrome plated bores. Engine damage will occur.

Replacement ring for the following:

Pistons:

RE901M04900

569M04900

643M04900 (NLA from DK)

879M04900 (N/A from DK)

645M04900 (NLA from DK)

806M04900 (NLA from DK)

508M04900 (NLA from DK)

646M04900 (N/A from DK)

Top End Kits:

PK1527

PK1208 (NLA from DK)

PK1557 (NLA from DK)

PK1712 (N/A from DK)

PK1905 (N/A from DK)

(1) Piston ring

Instructions