Front Disc Brake Upgrade Kit

The StopTech 83.112.4600.R4 is a comprehensive front brake upgrade kit engineered to surpass original equipment performance. This system incorporates larger-diameter, two-piece AeroRotors that are both floating and slotted, significantly increasing heat capacity and resistance to fade, thereby improving overall stopping power. The design philosophy behind this kit is StopTech's patented Balanced Brake Upgrades®, ensuring optimal front-to-rear brake bias through carefully selected caliper bores and piston sizes. The kit is rated for medium dust levels and offers a 5/5 stopping power rating, with a 2/5 noise level. It is recommended for various driving conditions including towing oversized tires, performance street driving, street and track events, and normal commuting. The kit offers a 4-star performance over stock rating for track day/towing applications. This particular kit, StopTech 83.112.4600.R4, has been discontinued by the manufacturer and is currently unavailable for sale. It is noted that this specific caliper configuration, the ST-40 caliper, does not fit stock wheels. The kit is vehicle-specific, with compatibility listed for various Audi A4 and A4 Quattro models from 2006-2008, including Base, Avant, and Cabriolet trims, all specified for front axle fitment with 332x32mm rotors.