Wilwood Caliper-Forged Superlite 4-ST 1.88/1.75in Pistons 1.25in Disc 2003-bmw-m3-esi5615045 includes CAN Module

includes CAN Module

Heat-treated forging for strength and toughness

Your vehicle's factory fuel pump wiring may not be adequate enough to handle the current draw of AEM's High Flow Fuel Pumps

which provides increased heat and pressure tolerance

Gated System brings boost on faster

Wilwood Caliper-Forged Superlite 4-ST 1.88/1.75in Pistons 1.25in Disc 2003-bmw-m3-esi5615045 includes CAN ModuleFSLI4 and FSLI4 ST calipers provide the pad wear performance advantages of differential bore pistons with the option for ultimate heat protection using Thermlock pistons in the ST models. Differential piston bores compensate for leading edge mechanical loading and temperature variances across the pad face to reduce pad taper wear in sustained high temperature applications. Thermlock pistons in the ST models block heat transfer from the pads and reduce