Dress up your Duramax with this simple, bolt on, turn out exhaust tip to transform the look of your Chevy or GMC all while reducing backpressure and EGT's leaving the tailpipe. The stock tailpipe piece is reduced down which creates unnecessary back pressure. Improve this with the Mel's Performance Vented Turn Out Exhaust Tip as you get your exhaust gases out and pointed in a better direction.