If reducing exhaust noise and maintaining engine performance is a concern, trust the exhaust lineup from Car Chemistry. They have developed an innovative and patented collector insert that reduces exhaust sounds to acceptable levels. These collector insert products have become very popular as they do not hinder performance. Most vehicles see a jump in low and mid range torque. Any loss at the top end can usually be tuned back in. Hot rodders can often run these with open pipes and still maintain an acceptable noise level. Many race tracks have to comply with noise regulations. Car Chemistry exhaust inserts are the answer on the track and on the street! JEGS carries Car Chemistry collector inserts at everyday low prices, ready to ship!