This piston set is ideal for oval track to street/strip applications, it is forged from 2618 Low Silicon aluminium alloy. Features include Precision Machined CNC Ring Grooves and forced pin oiling. Piston set accepts 1, 1.2, 2.8mm rings.


Spiro Lock: 866-042-CS
Straight Wall Pin: 866-2500-18-51C (110g)


Part #: J309127
CID: 4.0L
Bore: 3.661
Stroke: 3.900
Rod Length: 6.058
Compression Height: 1.214
Dome Volume: -11cc
Gram Weight:
Footnote: .866 Pin Diameter,
Oversize: 0.030
Ring Set Included: JG1001-3661
Ford BA-BF XR6 4.0L 6 Cyl Turbo .030" - Dish Forged Piston 4.0L, 3.661" bore, 3.900" stroke, 6.058" rod length, -11cc dome volume
SKU J309127
Brand JE Pistons

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