Carbing Strut Tower Bar with MCS 93-96 Mazda RX-7 (Frt) - P/N: CA641-405-0L-T Product Model: CB-CA641-405-0L-T The Carbing Tower Bar is completely welded piece (no pivot point) with a 5 mm thick base plate. Constructed of A6063S aluminum for superior rigidity and light-weight. The built-in brake master cylinder stopper allows the driver increased brake pedal feel which gives the driver greater control.