JE LS ASYM -17.7cc Dish Pistons (3.622 Stroke, 4.030 bore, 6.125 rods) 312029

Product Code: 312029
Availability: In Stock
$952.34 $1,007.77

Available Options

Our brand new Asymmetrical FSR (Forged Side Relief) forging design allows for the use of the most popular stroke and rod combinations while eliminating reluctor wheel clearance problems. Asymmetrical forging design maintains a larger skirt on the heavily stressed major thrust side, while reducing friction with a smaller skirt on the minor thrust side. The result is a high strength, lightweight piston that significantly reduces friction in your engine. Lightweight and extremely durable, these pistons are machined for 1.2mm, 1.5mm, 3.0mm rings.

Accumulator Grooves 
Double Pin Oilers 
Offset Wrist Pin 
Pin #927-2250 For use with 6.125” Rod Length 
Round Wire Locks # 927-073-MW 

Rings Sold Separately - Option to add JG31F8-4030-2 +$150  (
4.030+2 Bore, File Fit, 1.2, 1.5, 3mm Ring Pak, Low Tension Oil Rings) 

*** LSA & LS9 Engines require oil squirter location modification for clearance. / OEM LSA Connecting Rods require milling for proper fitment ***

Bore Size
Crankshaft Stroke
Rod Length
Piston Type
-17.7cc Dish 
Compression Height
Piston Material
2618 Forged 
Piston Ring Size

1.2mm, 1.5mm, 3mm Rings (NOT Included) 

Wrist Pin Size
.927 Pins
Valve Pocket Combination 12 degree (LS7 only) and 15 degree Valve Pockets

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