Tomei Exhaust products are being used all over the world and are well known for their performance gains, unique designs, fabrication quality and value for money. They designed these headers to be in a 4-2-1 layout with 42.7 mm, 45.0 mm and 60.0 mm sizes respectively. They did this in order to extract the absolute maximum form your EJ turbine with the equal length design. These manifolds are manufactured using a Lost Wax process designed to eliminate cracking from welded weak points and for aiding smoother exhaust gas flow without any interference. Using 2.5 mm thick pipes made from SUS304 stainless steel ensure you are getting one of the best pieces on the market today.

Features:
– Piping Material = SUS304 Stainless Steel (OEM is cast Iron)
– Flanges Material = SUS304 Stainless Steel
– Main Pipe Diameter = 42.7 mm
– Exit Pipe Diameter = 60 mm (OEM is 42.7 mm)
– Pipe Thickness = 2.5 mm
– Weight = 20.28 lbs. (OEM is 29.32 lbs.)
– Keeps The Subaru Boxer Rumble

Includes:
– Manifold
– 3-Bolt Up-pipe
– Heat Wrap
– Metal Zip Ties
– All Gaskets
– Hardware

Applications:
2004-2007 STI
2008-2014 WRX
2008-2014 STI
2015-2020 STI
2004-2008 Forester XT
2005-2009 Legacy 2.5L
2008-2009 Outback XT