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STM-Spec Manley Custom 11.5:1 Pistons for 4G63 Evo 4-9

STM Tuned Inc.


Vehicle Fitment:
1996-2006 Evolution 4/5/6/7/8/9
(2.0L 4G63 85.5mm Bore)

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

• 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

(4) Pistons
(4) Piston Ring Sets
(4) Wrist Pins
(4) Spiral Locks

See more Manley Pistons for the 4G63 Evo 7-9

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