Headers, Exhaust Manifolds

Alright, lets see, who makes these...

What?? Nobody does? Oh, okay, guess we'll have to then!

Available in stainless steel, this pair (both included) are the same dimensions as the factory header flange, used on the SC430 for instance. If you're looking to make a set of headers that bolt up to the factory H or mid piping, this is what you'll need. Or perhaps your exhaust is rusted, and you just need replacement options.

As seen in the pictures, they match perfectly over a factory header, but still give plenty of room for improvement when it comes to flow.

We also make the flange that goes from the manifold to the head! That can be added as well.

Factory exhaust manifold not included. Why would you use one of those anyways? Ew.

Please note this is a different flange shape from the non-VVTi 1UZ, and they are not interchangeable

Full set of all 4, for one engine! Perfect for making your own header design, whether it's for long tube, pulse tuned, or to hang a pair of turbos on your V12. We have a few sets we keep in stock, an XAT exclusive! 3/8" thick stainless steel, made in the USA!

XAT Racing is proud to introduce our newest turbo manifold design! These manifolds will fit Porsche 996TT or 997TT, or any derivative of the Mezger engine. These are exclusively made to order, in house, by us. Every manifold pair includes billet flanges and hand welded runners, as well as the factory EGT bung pre-welded. We will need the matching flange for the turbos you are using to make this manifold. You may also need to adjust how the wastegate piping is routed depending on your application.

As with our other manifolds, they're stainless with 2mm thick runner walls and are built to handle anything you can throw at them, even 1000+ HP. Please note due to the motorsport nature of this product, we are unable to warranty it.

A great turbo selection for these new turbos is Garrett's latest G series offerings, such as the G25-660. These turbos pack quite the wallop, and each one is rated for up to 660 HP!

* Our 3-year no questions covers any manufacturing related defect, including all welds and through cracking. The no questions asked warranty is for the original purchaser only. Micro-cracking of external welds in heat-cycled stainless has no affect upon performance.

Please contact us about availability as it does sometimes fluctuate. Both the header and the midpipe have inconsistent wait times. Lately the midpipe has not been available. Some modification may be required around the engine mount. Typically takes about 1 week to ship out.

16HP and 12 ft.lbs of torque is the largest single exhaust increase you can expect to create with the IS300's 2JZ inline six to date.

Manufactured from SUS-304 enhanced stainless steel, these are a true bolt-on design. These are machine mandrel bent, which means, no creases, no crumples, no odd flow patterns. A combination of both MIG and TIG welding ensures absolute integrity of each and every weld joint. Uses all factory O2 sensors!!

Fitment is specific for 2001-2005 IS300 and cannot be confirmed for any other chassis at this time. Bolts to factory exhaust. For OFF ROAD use ONLY. Most likely does NOT fit Altezza/RHD applications