MagnaFlow Y-Pipe and Tru-X Pipe transitions are great for single/dual, dual/dual and balance tube applications. MagnaFlow's stainless steel Tru-X crossover pipe represents a significant leap forward in technology over traditional H-pipes. The more gentle radius allows for better exhaust gas scavenging, noise cancellation and better balance between cylinder banks. The result is a significant increase in power and torque but a reduction in db sound levels... the best of both worlds. PartNumber : mag15396 Description : Turbo Down-Pipe 04-07 Dodge Diesel Main Piping Diameter : 4 Material : Stainless Warranty : N/A Main Piping Diameter (in.) : 4 Title : Extension Pipes WARNING CA Proposition 65 : No California Proposition 65 : WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov 2005-2007 Dodge Ram 2500 Laramie L6.-cc Exhaust, Mufflers & Tips::Downpipe Back 2004 Dodge Ram 2500 SLT L6.-cc Exhaust, Mufflers & Tips::Downpipe Back 2006-2007 Dodge Ram 2500 SLT L6.-cc Exhaust, Mufflers & Tips::Downpipe Back 2006-2007 Dodge Ram 2500 Sport L6.-cc Exhaust, Mufflers & Tips::Downpipe Back 2004 Dodge Ram 2500 ST L6.-cc Exhaust, Mufflers & Tips::Downpipe Back 2006-2007 Dodge Ram 2500 ST L6.-cc Exhaust, Mufflers & Tips::Downpipe Back 2006-2007 Dodge Ram 2500 TRX4 L6.-cc Exhaust, Mufflers & Tips::Downpipe Back 2004-2007 Dodge Ram 3500 Laramie L6.-cc Exhaust, Mufflers & Tips::Downpipe Back 2004-2007 Dodge Ram 3500 SLT L6.-cc Exhaust, Mufflers & Tips::Downpipe Back 2006-2007 Dodge Ram 3500 Sport L6.-cc Exhaust, Mufflers & Tips::Downpipe Back 2004-2007 Dodge Ram 3500 ST L6.-cc Exhaust, Mufflers & Tips::Downpipe Back 2007 Dodge Ram 3500 TRX4 L6.-cc Exhaust, Mufflers & Tips::Downpipe Back