StopTech Sport Drilled R otor

The StopTech Sport Drilled Rotor is a high-performance rear brake component engineered for drivers who demand superior stopping power and thermal management. Designed specifically for 2001–2008 Audi A4 and 2002–2004 Audi A4 Quattro models, this rotor upgrades OEM braking capacity with a purpose-built architecture that reduces brake fade during aggressive driving, track use, or heavy towing scenarios. Whether you're modifying a daily driver for improved safety margins or building a weekend performance machine, drilled rotors offer a proven upgrade path that balances street manners with genuine stopping improvement.

This rotor features a 245 mm outer diameter with a 9.9 mm thickness and utilizes a drilled design that channels heat and gas away from the brake pad contact surface, maintaining consistent friction coefficients even under sustained braking loads. The cast iron construction provides excellent thermal conductivity and durability, while the 5 x 112 mm bolt pattern ensures direct fitment without adapter complications. At 7 lbs per rotor, the weight-to-performance ratio makes this an accessible upgrade for mechanics seeking real-world braking improvements without exotic materials or excessive unsprung mass penalties. The passenger-side application pairs seamlessly with a driver-side mate to create a balanced, symmetrical brake system.

Technicians and enthusiasts installing performance brake systems appreciate drilled rotor designs for their ability to dissipate moisture and improve pad modulation without the corrosive effects of slotted designs. This rotor is best paired with high-friction brake pads and quality brake fluid to unlock its full potential. Installation requires standard brake service tools and a working understanding of brake system bleeding; professional installation is recommended if you lack prior brake work experience. The drilled geometry makes this component ideal for spirited street driving, autocross events, or any application where fade-free braking under repeated hard stops is non-negotiable.