R1 Concepts 830-31130L DFC GeoPerformance Drilled Slotted Brake Rotor - 345mm Rear Left

The R1 Concepts 830-31130L is a Dynamic Friction Company (DFC) Geoperformance brake rotor engineered to deliver superior stopping power and enhanced braking performance. This high-performance rotor features both cross-drilled and diamond-slotted surfaces to maximize heat dissipation, reduce brake fade, and provide consistent stopping power under demanding conditions.

Key Features:

• Cross-Drilled and Diamond Slotted Design: Drilled holes reduce heat buildup by up to 105°F while diamond slots remove brake dust, road debris, and prevent pad glazing for extended pad and rotor life
• Geospec Coating: Advanced rust-resistant coating protects non-friction surfaces from corrosion, maintaining appearance and extending rotor lifespan
• Premium Cast Iron Construction: Manufactured from G3000/G11H18 grade cast iron to match OEM specifications for strength, stability, and durability
• Directional Design: Engineered for rear left position with optimized venting pattern for maximum cooling efficiency
• Precision Machined: Mill-balanced and machined to tight tolerances for smooth, vibration-free operation and quiet braking
• Direct Fit: No modifications required for installation, built to OEM specifications

Specifications:

• Position: Rear Left
• Outside Diameter: 345mm (13.6 inches)
• Nominal Thickness: 24mm
• Minimum Thickness: 22.4mm
• Overall Height: 64.1mm
• Bolt Pattern: 5-lug
• Rotor Type: Vented, Directional
• Surface: Drilled and Slotted
• Finish: Geospec Silver Grey

The DFC Geoperformance series is ideal for daily driving, street performance, light track use, towing, and hauling applications. The chamfered drill holes maintain rotor integrity and are counter-sunk to prevent cracking while allowing smoother brake pad bed-in. This rotor provides the perfect balance of performance, durability, and longevity for discerning drivers who demand more from their brake system.