42 Draft Designs MK4 2.5" Catback Exhaust - Single Tip

Description
Designed to bolt to 42's 1.8T 3" downpipes, their 2.5" & 3" cat-back systems begin with a CNC machined flange that connects to your existing 42 Draft downpipe. After this flange, an oxygen sensor bung allows for installation of the post-cat oxygen sensor. In a straight shot this system bolts to your downpipe and slides into the first hanger, while a resonator removes rasp from the exhaust note. Next, 42's system makes the bend around the gas tank and over the rear axle. Fitment in this area is crucial. The over-axle pipe is bent correctly and built correctly to avoid rear axle rubbing on the lowest cars. Next, a Magnaflow muffer is tucked into the heat shields, almost hidden from view.
The relentless attention to detail is proven by the fitment of these 2.5" & 3" cat-backs. 42DD's flanges are CNC machined in house from 1018 cold roll steel. Adjustable flanges are used where appropriate to allow each section to bolt-up as designed on every car. Hangers bars are precisely bent to slide into the factory hangers straight and level. At the rear hanger two collars are included and designed to lock the position of the rear muffler in place. Once you've adjusted your tip fitment - keep it there! Each and every system is built by hand on production tooling and TIG welded. All hardware needed for installation is included - gaskets, bolts, washers, and locknuts. 42 uses mechanical locknuts to assure your system never vibrates loose.
The sound of these systems has been imitated since the first sound clips hit the internet. We describe the sound as "quiet when you need to be and loud when you want to be." At idle, the car emits a deep rumble. At low rpms and cruising speeds the sound is mellow and quiet. The exhaust opens up at full throttle and high rpms with a great tone and not a hint of rasp or drone. 42 tested various resonator and muffler combinations before finding the perfect balance of power and sound.
While all of their long-term testing was done on 1.8T vehicles, this system will also fit turbocharged 2.0, VR6, and even TDI equipped mk4 VWs. Fitment is designed to connect to your existing 3" downpipe. The system will bolt-up perfectly to our 1.8T 3" downpipes, but we also accomodate other brands of 3" downpipes and custom downpipes by including an extra flange. This flange is intended to be welded to the end of your existing 3" downpipe. Precise fitment of our flange to your existing downpipe is necessary in order to fit this cat-back correctly. While this may seem like a hassle, it is necessary for us to assure a perfect fit. Keep in mind, these cat-backs are designed for factory and custom turbocharged vehicles (1.8T, 2.0T, VR6T). 3" piping is beyond overkill for all-motor applications and not recommended by 42. The flanged system is designed to bolt-up to 42DD 1.8T 3" downpipes and allow custom fitment to any 3" downpipe on any motor.
Horsepower and torque gains for these cat-back systems cannot be accurately reported as a nominal gain. These cat-backs can be installed on a wide range of vehicles - from a 200whp 1.8T to a 500whp VR6 turbo. Power gains always depend on turbo size, tuning, and what you're replacing.