StopTech Trophy Rear 345 ST40 Big Brake Kit for E9X 335i features -
- 20% lighter STR40 forged calipers
- 50% better cooling airflow in Aerorotors
- Hard-anodized coating on calipers and rotor hats
- Forged caliper brackets with mounting studs
- Pads included
- Stainless brake lines included
Everything about the StopTech Trophy kits have been optimized for exclusive track use. This means lighter weight and specific design features dictated by extreme track requirements. BMW Trophy Kits feature all of the great advantages of a regular StopTech Big Brake Kit: the Balanced Brake Upgrade(R) approach that optimizes brake distribution to improve traction at all four corners, patented rotor cooling vanes for longer pad life and less fade, and the stiffest caliper designs in the industry.
Where Trophy kits become extra special is in the details: the STR calipers are
20% lighter thanks to extra machining, the rotors have
50% more air airflow with a special mounting system for the rotor hat, and
pad knock-back is eliminated by using floating hardware between the hat and disc. All of these features would go unnoticed on a regular street BBK but are advantageous for a track or race application.
StopTech Trophy BBK are built with a singular purpose: uncompromised braking performance on the racetrack. With a ultra-rigid caliper design, less brake fade, model-specific piston sizing, and abundant pad options StopTech Trophy brakes will boost your driving confidence and lower your lap times! Drivers in World Challenge, Grand-Am/IMSA, NASA, and SCCA have already benefited from the Trophy brake advantages with numerous wins and championships.
| 2pc Aerorotor | Floating Hardware | Anti-Rattle Hardware | STR Caliper | Dust Boots | Included Brake Pad Type | Stainless Brake Lines |
| Trophy Sport | X | X | X | X | X | 309 Sport | X |
| Trophy Race | X | X | | X | | SR33 Race | X |
Race calipers do not use dust boots on the caliper pistons and are only sold for racing or exclusive track activity only. Caliper dust boots play a key role in preventing debris from damaging the inner piston seals and causing a very dangerous loss in brake pressure. For any street use, please select the Trophy Sport kit. As with any racing braking system, periodic rebuilds and regular fluid changes using an appropriate fluid are strongly advised.
Trophy calipers are only available in dark-grey military-spec hardcoat.
Best Price Guarantee!BimmerWorld StopTech pricing will not be beat! If you found a lower published price elsewhere, call or email us and we will meet it or beat it!
BMW Fitments:3 SeriesE90 (09-11) > 335d
E90 / E92 / E93 (07-13) > 335i
E90 / E92 / E93 (07-13) > 335is
