42 Draft Designs mk4 Downpipes
42 Draft Designs offers many other products specifically designed for your Volkswagen or Audi. Their manufacturing capabilities include plastic injection molding, thermoforming, CNC machining, fabrication, and electronics design. One of their new products is the mk4 1.8T K04 3″ Downpipes!
Over the years the Audi TT K04-020 turbocharger has proven to be a worthwhile upgrade on the K03 equipped mk4. Since the release of a few bolt-on K04 turbocharger kits the DIY crowd has been scouring the TT classifieds piecing together kits for less. Until now, no bolt-on downpipe has been available which allows the TT 225 K04-020 turbo and manifold to fit the mk4. Those days are over!
42 Draft Designs’ 3″ downpipe begins at the turbo with a CNC machined turbo flange and the tightest 3″ mandrel bend possible. The remainder of the downpipe is CNC mandrel bent in one piece to add strength and eliminate unnecessary welds. A stainless steel flex section is used to absorb engine movement. After the flex section a CNC machined flange allows a 3″ high-flow cat or 3″ test pipe to be installed. Magnaflow catalytic converters are used for all of the downpipes. After the cat, a custom adaptor allows perfect bolt-on fitment to any aftermarket cat-back. 42 Draft Designs offer adaptors for stock sized exhausts, 2.5″ and 3″. The whole downpipe bolts together to ensure zero leaks and zero problems. They use triple layer graphite gaskets and grade 5 locking hardware for the tightest fit.
The modular nature of the downpipe allows the user to change configurations at any time. For example, 42 Draft Designs’ downpipe may be purchased with a stock sized adaptor and connected to stock or any basic aftermarket cat-back exhaust. At any time a 2.5″ or 3″ cat-back can be installed using the appropriate adaptor. The 3″ cat-back systems are completely compatible with this downpipe allowing the possibility of a 3″ turbo-back in any configuration. On race days the catalytic converter can be easily swapped for a test pipe.
The 3″ downpipe is available in 6 configurations. Street series downpipes include a high-flow cat. Race series downpipes include a 3″ test pipe. Each downpipe includes a cat-back adaptor. 42 Draft Designs’ adaptors are available in stock size (2.15″), 2.5″ and 3″. Each downpipe is shipped complete with everything needed for installation. Additional adaptors, test pipe, cat section, gaskets, and hardware can be purchased separately at any time.
* Fits 1999-2005 VW mk4 Golf, Jetta, GTI 1.8T
* Fits 2000-2006 Audi TT 180 FWD
* Fits VW New Beetle 1.8T
* Available in street or race configuration
* 2 triple layer gaskets & OEM K04 turbo gasket included
* 5/16″ grade 5 locking hardware included
* Choice of 3 pipe size adaptors allow unrestricted fitment to any cat-back exhaust
42 Draft Designs was founded in 2001 as a manufacturer of plastic parts for Volkswagen and Audi vehicles. From the beginning their goal has been to design and manufacture unique products for the VW/Audi aftermarket. By designing and manufacturing our product line in-house we are able to create high quality modification solutions without compromise.