JE Pistons 311985 GM LS Asymmetrical FSR Flat Top 4.125 Bore

JE Pistons, Forged, LS7 427, Bore 4.125, Stroke 4.000, Rod Length 6.125, Flat Top -5cc, Set of 8

Special Price $915.29 Regular Price $1,016.99

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⚠ PROP 65 WARNING

⚠ WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer. Please contact us to obtain a list of harmful chemicals. For more information, go to www.P65Warnings.ca.gov.

Description

JE Pistons new GM LS flat top 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, JE pistons are machined for 1.2mm, 1.5mm, 3.0mm rings. Combination 12° & 15° Valve Pockets

Includes:

Accumulator Grooves

Double Pin Oilers

Offset Wrist Pin

Pin #927-2250-15-51C (106g)

Round Wire Locks # 927-073-MW

Compression Ratio:

64cc 12.2:1

68cc 11.6:1

70cc 11.4:1

Specifications

More Information
CNC Part Number	JE-311985
Price	$1,016.99
Manufacturer's Part Number	311985
Brands	JE
Part Types	Engine Piston
Departments	Parts
Vehicle Make	Chevy LS
Bore Size	4.125
Crankshaft Stroke	4.000
Rod Length	6.125
Piston Type	Flat Top
Compression Height	1.115
Piston Material	2618 Forged
Piston Ring Size	1.2mm 1.5mm 3.0mm
Wrist Pin Size	0.927
Custom Notices	⚠ PROP 65 WARNING

Upsell Products

PART #: JE-JG31F8-4125-2
JE Premium Race Series Piston Ring Set JG31F8-4125-2
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