STM-Spec Manley Custom 11.5:1 Pistons for 4G63 Evo 4-9 STMKIT The lifter body is cryogenically

The lifter body is cryogenically treated and its outside diameter is precision machined to match the cylinder head slot and oil passage clearances

• Max Voltage Input: 18 volts

standard sized upgrade for mild bolt-ons

stock plastic tank with this beautiful lightweight aluminum piece

STM-Spec Manley Custom 11.5:1 Pistons for 4G63 Evo 4-9 STMKIT The lifter body is cryogenicallyThe STM Spec Manley Evo IV IX Custom 11. 5: 1 Pistons for 2. 0L 4G63 are now available! These 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