R1 Concepts 631-92093L RNC Drilled & Slotted Brake Rotor

The R1 Concepts 631-92093L RNC Series Drilled and Slotted Brake Rotor is engineered to deliver superior stopping performance over standard OEM rotors. Combining cross-drilled holes and precision-cut slots, this rotor promotes aggressive heat dissipation, improved gas and debris evacuation, and consistent bite from your brake pads under demanding driving conditions.

The RNC (Race and Competition) series features a high-carbon iron alloy construction that resists warping and cracking, even under repeated heavy braking. The drilled pattern reduces overall rotor weight for improved unsprung mass, while the slots continuously clean and refresh the brake pad surface for more predictable, fade-resistant performance.

Key Features:

• Drilled & Slotted Design – Dual-function surface pattern maximizes heat dissipation and pad bite
• High-Carbon Iron Alloy – Resists warping and thermal cracking for long-lasting performance
• Gas & Debris Evacuation – Drilled holes and slots clear gases and contaminants for consistent braking
• Weight Reduction – Cross-drilled pattern lowers unsprung rotating mass for improved handling
• Direct OEM Replacement Fitment – Engineered to bolt in without modification
• Corrosion-Resistant Finish – Protective coating on non-braking surfaces resists rust during storage and operation
• MPN: 631-92093L

The R1 Concepts 631-92093L is a left-side (driver side) rotor, sold individually. It is an ideal upgrade for performance street driving, track days, and towing applications where heat management and consistent brake feel are critical.