The 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 Pistons are capable of handling all the power you can throw at them.
Vehicle Fitment:
1996-2006 Evolution 4/5/6/7/8/9
(2.0L 4G63 85.5mm Bore)
| Part Number: | 5812STM1C‑4 |
| Pin: | STM-Spec Pin .250″ Wall (9310 Alloy) .866″ / 22mm Pin |
| Bore Size: | 85.5 +.5mm |
| Rod Length: | 150 mm |
| Stroke: | 88mm Standard Stroke (2.0L) |
| Cylinder Head cc: | 43 cc |
| Compression Ratio: | 11.5:1 for EVO |
| Weight: | 376 Grams |
| Ring Set: | 46855‑4 |
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