Black market racing single 3.5".... hands down the best!!!
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08 CRIMSON 135I 6 SPEED
BMR 3.5" SINGLE EXHAUST/ BMS OCC/ DOC RACE 62MM SINGLE KIT/ SPEC STAGE 2 CLUTCH/ SPEC STEEL SINGLE MASS FLYWHEEL/ MOTIV OIL THERMOSTAT DELETE/ BLACK KIDNEYS/ VMR 702/ BMW PERFORMANCE WHEEL, E-BRAKE, KNOB, BOOT/ ARM REST DELETE / ER OIL COOLER /CARBON LIP AND REIGER DIFFUSER / HAWK HPS PADS / 2 PC. FRONT ROTORS DRILLED SLOTTED / DRILLED SLOTTED REAR ROTORS / AA SPORT INTERCOOLER/ VRSF CHARGE PIPE/ TIAL BOV/ JB4