STM-Spec Manley Custom 11.5:1 Pistons for 4G63 Evo 4-9 tuning Users can program them to

Users can program them to ascend in specific increments based on RPM range and flash when it is time to shift

black nylon hose that will not scratch your paint like the stainless braided line

clear ABS plastic designs

• Tig welded

4 or later or Apple iOS 9

STM-Spec Manley Custom 11.5:1 Pistons for 4G63 Evo 4-9 tuning Users can program them toThese are the same gas ported pistons we have been testing in our STM Race Engines and easily trapping 165+ MPH in the 1 4! The STM Spec Pistons are only available in 85. 5mm bore and come with coated skirts, rings and wrist pins. If you have questions about your build, feel free to give us a call and we will get you on the right path to your goals. STM Spec Pistons are capable of handling all the power you can throw at them. Vehicle Fitment: 1996