TROPHY RACE BIG BRAKE KIT

This StopTech Trophy Rear ST40 355 Big Brake Kit is a rear, 4-piston, weight-optimized, balanced big brake kit specifically designed for the BMW F3X chassis 335i and 435i models. It is optimized for exclusive track use, featuring 20% lighter STR40 forged calipers, 50% better cooling airflow in Aerorotors, a hard-anodized coating on calipers and rotor hats, and forged caliper brackets with mounting studs. The kit includes brake pads and stainless steel brake lines. It utilizes a balanced brake upgrade approach to optimize brake distribution and improve traction. The design eliminates pad knock-back by using floating hardware between the hat and disc.