Manual Transmission Only.

Good-Win Racing's take on the classic 4 to 1 MX5 manifold! The most bang for your money, with all the features you need in an Exhaust Manifold for your 1.8 MX-5  .

Manufactured entirely from 304-stainless steel with thick flanges that will not warp like other stamped or cast flanges. Large 1.7" primaries collecting to a 2.375" OD tube via a smooth 4:1 merge.

Now UPDATED to include TWO O2 sensor bungs: one right after the merge, for your primary O2 sensor, and a second bung further down by the outlet flange which you can use to add an auxiliary wideband sensor, or use it when you go to the dyno for the sensor that's hooked up to the dyno, etc. All without having to weld in an extra bung later.

EGR compatible.

Gasket included. Comes with a plug loosely installed in the oxygen sensor bung.

Note:-
That adding any header results in an increase in the exhaust sound level on your MX5.

Note:-
There is an INTENTIONAL small dent in one of the primary tubes for clearance to the steering rod.