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Selling a brand new in box
Type R style 4-1 stainless steel exhaust manifold/header
2.5" collector---accepts JDM type R "donut" gasket (not included but you can use an s2000 OEM Honda header gasket)
will bolt to 2.5" cat/2.5" test pipe--I don't believe it will bolt to the factory catalytic converter
brand new/never mounted never used
These add a good amount of power over most headers with smaller 2" collectors. Great on mild 1.6 to 1.8 b-series Honda builds For a mass produced header these are REALLY NICE
Will fit b16a/b17a/b18c all B-series vtec motors