StopTech E90/E92 335 (2007+) Big Brake Kits (Except Xi)

Stoptech big brake kits are designed for ultimate performance instead of a piece of "eye-candy". We have worked with Stoptech on the design of their E36 M3 kit and custom applications for our World Challenge cars and no one puts more effort into making a brake kit absolutely perfect.

The turbocharged 335i has opened the books on a new era in BMW tuning. StopTech supports the amazing performance that is possible in these cars with ST-60 six-piston calipers and 355x32mm (14.0 x 1.26-in.) AeroRotors for the front axle. StopTech’s rear-axle upgrade includes ST-40 four-piston calipers and a lighter-weight 345x28mm (13.6 x 1.1-in.) AeroRotor to minimize unsprung and rotating mass. These systems work with 18-in. wheels.

Engineered for Your Vehicle

A history of racing success has all been achieved with the same products and technology StopTech sells for your street and track day car, with features and quality that have earned TUV approval.

Each StopTech Balanced Brake Upgrade system is engineered to directly replace the stock brake system, providing the correct torque at the axle when used with the vehicle’s original master cylinder and with no additional proportioning adjustment. This provides the best pedal feel and shortest possible stopping distances, as well as maintaining the proper function of ABS and other vehicle dynamics control systems.

StopTech calipers use standard pad shapes, which are readily available in a range of street performance and race friction compounds.

Content Equals Value

StopTech calipers have special attention paid to brake pad retention for reduced NVH and the quickest reaction. All StopTech calipers include bellows-style dust boots to protect against debris and corrosion. They are manufactured with processes designed to maximize material density and strength. StopTech brackets mount the caliper with close-tolerance, concentrically-ground studs rather than bolts which maximize the rigidity of the caliper-to-upright assembly.

StopTech’s patented, directional AeroRotor offers up to 80 percent greater induced cooling airflow than original equipment rotors. This reduces maximum and average operating temperatures, improving pad and rotor life. StopTech’s AeroRotors are manufactured from a proprietary iron alloy that has demonstrated up to twice the crack resistance of a leading competitor’s rotors. The Aero Rotor’s two-piece, floating design with directional hats resists coning at high temperatures, eliminating radial pad taper. StopTech hats are machined from specially heat-treated 7075 Alcoa aluminum alloy billet, offering the maximum in strength and corrosion resistance.

All finish machining, assembly and testing of calipers is performed at StopTech’s facility in California. The same location is used for machining caliper brackets and AeroHats for the two-piece AeroRotors, as well as assembly and testing of StopTech’s stainless steel brake lines. Every finished caliper is tested to 2500 PSI, every stainless steel brake line to 4500 PSI.