034Motorsport 2-Piece Floating Rear Brake Rotor 350mm Upgrade for MQB VW & Audi | 034-301-2004

The 034Motorsport 2-Piece Floating Rear Brake Rotor 350mm Upgrade (034-301-2004) is a high-performance braking solution for MQB-platform vehicles. This kit is designed to significantly increase stopping power and thermal capacity by upsizing the factory 310mm rear rotors to a massive 350mm diameter. Despite the larger size, each rotor weighs approximately 14 lbs, providing a 1 lb weight reduction per corner over the smaller factory units. This reduces rotational mass while simultaneously improving the mechanical leverage of the rear braking system.

Engineered for street, track, and HPDE use, these rotors feature a floating 2-piece design with 6061-T6 aluminum hats and proprietary CM-250 alloy rings. The 72 directionally curved vanes act as a centrifugal pump, forcing cool air through the disc to dissipate heat rapidly. The floating mounting system allows the rotor ring to expand and contract independently of the hat, preventing warping and ensuring a consistent pedal feel under extreme braking temperatures.

Key Features:

• Increased Diameter: Upgrades rear rotors from 310mm to 350mm for improved braking leverage and torque.
• Weight Reduction: Weighs only 14 lbs per rotor, saving 1 lb of rotational weight per corner compared to the smaller OEM rotors.
• Floating 2-Piece Design: High-strength alloy steel bobbins allow for axial and radial float, accommodating thermal expansion without stress.
• Superior Cooling: Features 72 directionally curved vanes to maximize airflow and heat dissipation.
• J-Slot Friction Face: Designed to clear brake dust and debris while allowing for pad outgassing during heavy use.
• Aerospace Grade Materials: 6061-T6 aluminum hats with Type III Hard Anodizing and special CM-250 alloy rings.
• Complete Upgrade Kit: Includes the necessary caliper carrier conversion brackets to retain your factory rear calipers.

Technical Specifications:

Installation Note: This kit is specifically designed for MQB vehicles originally equipped with 310mm vented rear rotors. Type III hard anodizing may result in slight color variations between batches, which is normal for this functional coating.