Product Description
Vehicle Fitment:
1996-2006 Evolution 4/5/6/7/8/9
(2.0L 4G63 85.5mm Bore)
Description:
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.
| Part Number: | 5812STM1C‑4 |
| Pin: | STM-Spec Pin .300" 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: | 8.5:1 for DSM 9.0:1 for EVO |
| Weight: | 376 Grams |
| Ring Set: | 46885‑4 |
Features:
• Gas ported
• Moly coated skirts
• 2618 high strength material
• Lightweight design with offset wrist pin for quiet start-ups
• 9310 Alloy 2.250 x .300" STM-Spec wrist pin
• Pressure balance groove
• Premium Steel top rings with Napier seconds and round wire locks include
Includes:
(4) Pistons
(4) Piston Ring Sets
(4) Wrist Pins
(4) Spiral Locks
