Supertech Mazda Miata 1.8L 84mm Bore -4cc Dish 8.6:1 Pistons - Set of 4 (Excl Rings) fits_2011-2015`Honda`CR-Z`Base~2011-2016`Honda`CR-Z`EX~2016`Honda`CR-Z`EX-L~2016`Honda`CR-Z`LX A mitered merge is used

A mitered merge is used to decrease turbulence and increase exhaust velocity resulting in increased horsepower

Mishimoto has designed four universal heat exchangers to support any build up to 1

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Supertech Mazda Miata 1.8L 84mm Bore -4cc Dish 8.6:1 Pistons - Set of 4 (Excl Rings) fits_2011-2015`Honda`CR-Z`Base~2011-2016`Honda`CR-Z`EX~2016`Honda`CR-Z`EX-L~2016`Honda`CR-Z`LX A mitered merge is usedSupertech Mazda Miata 1. 8L 84mm Bore 4cc Dish 8. 6: 1 Pistons Set of 4 (Excl Rings)