R1 Concepts 623-21043R RNC Series Cross-Drilled Disc Brake Rotor

The R1 Concepts 623-21043R is an RNC Series cross-drilled disc brake rotor engineered to deliver improved stopping power and thermal management over standard OE-style rotors. Precision-manufactured to strict dimensional tolerances, this rotor is a direct-fit replacement that installs without modification.

R1 Concepts' cross-drilled pattern allows heat, gas, and water to dissipate quickly from the rotor surface, reducing brake fade during repeated or aggressive stops. The rotor is manufactured from high-carbon grey iron for superior strength, durability, and consistent pedal feel over the life of the part.

Key Features:

• Cross-Drilled Design: Drilled holes promote rapid heat and gas dissipation, reducing rotor temperatures and brake fade
• High-Carbon Grey Iron Construction: Delivers increased hardness, noise dampening, and longer service life compared to standard iron rotors
• Direct OE Replacement: Engineered for precise, no-modification fitment
• Corrosion-Resistant Finish: Zinc-washed or coated hat and edges protect against rust during storage and initial use
• Precision Balanced: Machined to tight tolerances for smooth, vibration-free operation
• R1 Concepts RNC Series: Part of R1 Concepts' performance street rotor lineup

The R1 Concepts 623-21043R brake rotor is an excellent upgrade for drivers seeking better braking performance and heat management while maintaining daily drivability. Sold individually.