STM-Spec Manley Custom 11.5:1 Pistons for 4G63 Evo 4-9 STMKIT OEM Plug Options for the

OEM Plug Options for the Evo X:

line and hose are included and features an easy-access brass drain plug and a durable wrinkle black powdercoat finish

You will need the Evo 4/5/6 upper radiator hose if you are swapping it into your Evo 7/8/9

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

1000 and 2000 psi for boost

STM-Spec Manley Custom 11.5:1 Pistons for 4G63 Evo 4-9 STMKIT OEM Plug Options for theThe 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