JE Pistons FSR Tour Series GP Pistons 258027L

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Part Number: JEP-258027L

$188.99

$209.99

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Piston, Forged, Flat Top, 2-Valve Reliefs, 4.045 in. Bore, 3.500 in. Stroke, 5.700 in. Rod, 1.550 in. Compression, Chevy, Left, Each
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JE Pistons FSR Tour Series GP Pistons 258027L

JE Pistons FSR Tour Series GP Pistons 258027L

JEP-258027L

Not Yet Reviewed

Part Number: JEP-258027L

Estimated Ship Date: Nov 11, 2026

$188.99

$209.99

(Save $21.00)

Estimated Ship Date: Nov 11, 2026 Would you rather pick it up?

Overview

Brand:
Manufacturer's Part Number:
258027L
Part Type:
Product Line:
Summit Racing Part Number:
JEP-258027L
Item Number:
5250937
UPC:
193564211842
Piston Rings Included:
No
Bore (in.):
4.045 in.
Bore (mm):
102.743mm
Stroke:
3.500 in.
Engine Stroke Type:
Stock
Actual Engine Displacement:
5.9L/360
Rod Length:
5.700 in.
Piston Style:
Flat top, with two valve reliefs
Piston Material:
Forged aluminum
Compression Height (in.):
1.550 in.
Piston Head Volume (cc):
+4.10cc
Wrist Pin Style:
Press-fit or floating
Wrist Pin Retainers Included:
Yes
Wrist Pin Included:
Yes
Pin Diameter (in.):
0.927 in.
Piston Ring Thickness:
0.043 in. x 0.043 in. x 3.00mm
File Fit:
No
Gapless:
No
Top Ring Thickness:
0.043 in.
Second Ring Thickness:
0.043 in.
Oil Ring Thickness:
3.0mm
Remanufactured:
No
Quantity:
Sold individually.
Notes:
Designed to fit left exhaust valve orientation with 20/30 valve spacing. Also works with 3.480 in. stroke engines.

JE Pistons FSR Tour Series GP Pistons

JE Pistons FSR tour series GP pistons are a lightweight design specifically made for naturally aspirated Circle Track or drag race applications up to 650 hp. Their ring package has been raised for maximum efficiency. These pistons are an aggressive, competition-only design, not intended for street or nitrous use. Their ring grooves are precision-machined for .043, .043, 3.0mm rings and their valve reliefs will accommodate angle-milled aftermarket cylinder heads.

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Instructions & Calculators

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