Raw 4" catalytic converter with unwelded ends so that you can have your local exhaust shop cut out your old cat and weld this replacement in. ONLY for those who have our RoadsterSport midpipes for NC (2006-2015) or ND (2016+) MX5.
Note our RoadsterSport midpipes are available with either 4" or 5" cats. THIS is a 4" diameter cat, not 5".
NOT CARB Approved. Not for sale in CA.