Ferrea Competition Plus Exhaust Valve - 91-95 Toyota MR2 Turbo 3SGTE +1mm Oversize - Set of 8 - F1866P Turbo AccessoriesBlue The Smart Port system involves

The Smart Port system involves a new piston manufacturing process utilizing specialized alloys and coatings and a revolutionary new vent-to-atmosphere trumpet design

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but adding our heat shield can help keep the excessive heat in check

That being said

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Ferrea Competition Plus Exhaust Valve - 91-95 Toyota MR2 Turbo 3SGTE +1mm Oversize - Set of 8 - F1866P Turbo AccessoriesBlue The Smart Port system involvesFerrea Competition Plus Valves have built a reputation as the industry's most reliable extreme duty valve. To manufacture the valves we use special aerospace quality alloys, including the EV8 Z18, which provides high tensile strength. An exclusive two step slow forging process ensures proper grain flow and virtually eliminates any damage to thematerial structure. The valves are then heat treated and stress relieved over a 48 hour period, which is the