R1 Concepts WHPN1-54139 Drilled & Slotted Black Brake Rotor Driver Side

The R1 Concepts WHPN1-54139 is a drilled and slotted black e-coated brake rotor designed as a direct driver-side replacement for compatible Ford Focus vehicles. This single rotor features R1 Concepts' signature combination of cross-drilled holes and milled slots to deliver enhanced stopping performance over a standard OEM-style solid rotor.

Key Features:

• Drilled & Slotted Design: Cross-drilled holes reduce heat buildup and weight, while the slots sweep away gas, dust, and debris from the rotor surface for consistent bite
• Black E-Coat Finish: A protective black electrophoretic coating resists corrosion and rust on non-swept rotor surfaces, extending component life and improving appearance
• Driver Side (D/S): Sold as a single rotor for the driver-side position — confirm passenger-side needs separately
• Direct OEM Replacement: Engineered to match OEM mounting dimensions for a straightforward, bolt-on installation with no modifications required
• Precision Balanced: Computer-balanced and precision-machined to minimize vibration and pedal pulsation for smooth, consistent braking performance
• High-Quality Metallurgy: Cast from premium gray iron alloy for durability and optimal heat dissipation under repeated braking cycles

The R1 Concepts WHPN1-54139 is an ideal upgrade or replacement for drivers looking to improve braking performance and rotor longevity on their Ford Focus without extensive modification.