These are the original TSR manifolds for the mk2 golf gti's, these also fit Corrado 1.8 and 2.0 16v however Corrado's with a catalytic converter will need the link pipe modifying to fit. They are a TSR design manufactured by Milltek Sport. These manifolds give great power increases and are a must have to get good power from your gti. We have sold hundreds of these manifolds and they are a perfect fit not like the many cheap copies available which are designed on left hand drive cars. These have been used on 220 bhp+ engines and was also fitted to fifth gears mk2 golf gti.