1986-2004 MUSTANG GT LX COBRA VARITUNE FULL CAT BACK EXHAUST SYSTEM SS TIPS 1983-pontiac-firebird-esi2278290 The hollow design gives you

The hollow design gives you loads of strength without adding a lot of weight

Popular in stock car racing differentials and transmissions

High detergency allows extended drain intervals and provides increased cleanliness

The added polyurethane bushings are designed to reduce body roll and eliminate erratic handling

S550 Mustang Rear Toe Arms (RTA) increase stability and response by eliminating bushing deflection while providing an increased range of rear toe adjustment

1986-2004 MUSTANG GT LX COBRA VARITUNE FULL CAT BACK EXHAUST SYSTEM SS TIPS 1983-pontiac-firebird-esi2278290 The hollow design gives youBBK Varitune cat back exhaust systems feature BBK Varitune mufflers that have a patented adjustable power valve inside that allows full adjustment of the exhaust flow through the mufflers chambers for a great sound and added performance. This adjustment is made at the rear of the muffler with a wrench by either moving the valve in or out. Once you are happy with the level of sound, it is locked in place with the Varitune locking nut. All of the