Description
Piston ring wear directly impacts compression, blow-by, and oil consumption—making ring selection critical for engine reliability and performance. The Hastings CM5521 delivers proven durability with plasma moly coating for extended ring life, even under sustained high-rpm operation. Whether you’re refreshing a claimer engine or building for consistency, this OEM-quality ring set maintains tight tolerances and standard tension characteristics your engine depends on.
- 4.000 inch bore
- 1/16 x 1/16 x 1/8 inch thickness
- Plasma moly coated
- Standard tension
- 8-cylinder kit
- Claimer-spec design
