R1 Concepts 623-03017L RNC Series Drilled Brake Rotor - Left

The R1 Concepts 623-03017L RNC Series Drilled Brake Rotor is a direct-fit, performance-grade replacement rotor engineered to deliver consistent stopping power and improved thermal management over stock brake components. Designed as a left-side (driver's side) rotor, this unit is precision-manufactured to meet or exceed OEM dimensional specifications for a straightforward, no-modification installation.

R1 Concepts drilled rotors feature strategically placed cross-drill holes that serve a dual purpose: they allow heat, gas, and debris to escape from the rotor surface during braking, and they help reduce overall rotor weight for improved unsprung mass performance. The result is more consistent brake pad contact, reduced brake fade under repeated or heavy braking, and a cleaner, more responsive pedal feel.

Key Features:

• Cross-Drilled Design: Improves heat dissipation and reduces brake fade during demanding driving conditions
• Left-Side Application: Designed specifically for the driver's side axle position (verify fitment for your vehicle)
• OEM-Grade Metallurgy: Manufactured from high-carbon gray iron for strength, durability, and noise reduction
• Precision Machined: Tight tolerances ensure proper fitment and minimized lateral runout for smooth, vibration-free braking
• Direct Replacement: Bolt-on installation with no modifications required
• Corrosion-Resistant Coating: Non-contact surfaces feature a protective coating to resist rust and improve appearance

The R1 Concepts RNC drilled rotor is an excellent upgrade for drivers seeking improved brake performance and cooling efficiency over a standard OE-style smooth rotor, while maintaining everyday street drivability.