Twisted Steel loop delete pipes by aFe replace the factory loop section on your exhaust (after the catalytic converter). They accommodate most aftermarket long-arm lift kits that interfere with the factory exhaust loop. Constructed from varying (depending on application) mandrel bent, steel tubing, these loop delete down pipes work with most factory and aFe Y-pipes. Eliminate your bulky, factory exhaust loop section with the aFe Twisted Steel loop delete pipes designed for your application.