Carrillo RS1MG660-4130-THG CP Piston Ring Set 66.0mm 4130 Steel Top Hard Gas Nitrided

The Carrillo RS1MG660-4130-THG is a high-performance piston ring set engineered by CP-Carrillo to complement their forged racing pistons. Designed for demanding motorsport and high-output engine applications, this ring set delivers superior sealing, durability, and thermal resistance under extreme cylinder pressures and temperatures.

Key Features:

• 66.0mm Bore Diameter – Precisely sized for a 66.0mm cylinder bore, ensuring optimal ring-to-wall fitment and minimal blow-by
• 4130 Chromoly Steel Construction – High-strength 4130 alloy steel provides excellent tensile strength and resistance to fatigue under racing conditions
• Top Hard Gas (THG) Nitrided Coating – The nitrided top ring surface dramatically increases hardness and wear resistance, extending ring life in high-heat, high-stress environments
• CP-Carrillo Compatible Design – Engineered to match CP-Carrillo forged piston ring grooves for precise fitment and reliable sealing
• Performance-Optimized Tension – Ring tension is calibrated for high-RPM applications, balancing sealing efficiency with minimal friction losses
• Race-Grade Quality Control – Each ring set is manufactured to tight tolerances consistent with CP-Carrillo's motorsport heritage

The Carrillo RS1MG660-4130-THG piston ring set is the ideal choice for engine builders and racers looking for a direct, purpose-matched ring solution for CP-Carrillo pistons. Whether building for road racing, drag racing, or high-performance street use, this ring set delivers the precision and durability required to maximize engine performance and longevity.