K3-2456-4125 420 Small Block Chevy K3-FX Series -28cc Dish Top Forged Piston Set. 4.125 bore
K3-2456-4125 420 Small Block Chevy K3-FX Series -28cc Dish Top Forged Piston Set. 4.125 bore
K3-2456-4125 420 Small Block Chevy K3-FX Series -28cc Dish Top Forged Piston Set. 4.125 bore
Load image into Gallery viewer, K3-2456-4125 420 Small Block Chevy K3-FX Series -28cc Dish Top Forged Piston Set. 4.125 bore
Load image into Gallery viewer, K3-2456-4125 420 Small Block Chevy K3-FX Series -28cc Dish Top Forged Piston Set. 4.125 bore
Load image into Gallery viewer, K3-2456-4125 420 Small Block Chevy K3-FX Series -28cc Dish Top Forged Piston Set. 4.125 bore

SKU: K3-2456-4125

K3-2456-4125 420 Small Block Chevy K3-FX Series -28cc Dish Top Forged Piston Set. 4.125 bore

$1,054.95
$1,054.95
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Ships in 1 - 8 days

Ships in 1 - 8 days

Made in the USA

Made in the USA

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This is a pre order item. We will ship it when it comes in stock.

420 Small Block Chevy K3-FX 2618 Alloy With Rings Comp Hgt: 1.362" -28cc Dish Top Pin: .927 Ring Grooves: 1.2/1.2/3MM Stroke: 3.875" Rod: 5.700" Forged and Machined in Saint Charles Illinois USA! Boost and NOS Ready! (Moderate to Extreme Levels) Aprox Comp Ratio: 58cc-9.95, 64cc-9.42, 70cc-8.94

Engine Brand: Chevy

Engine Family: Small Block Chevy

Engine Size: 420

With/Without Rings: Includes Rings

Cylinder Bore Size: 4.125 in - 104.7 mm

Ring Width: 1.2/1.2/3MM

Compression Height: 1.362"

Pin Diameter: .927

Connecting Rod Length: 5.700"

Crankshaft Stroke: 3.875"

Piston Series: 3-FX Series

Alloy: Forged 2618

Cylinder Head: SBC 23 Degree

TDC Assembly Height: 9.000

Piston Top Aprox. Comp. Ratio:

-28cc Dish Top
ChamberComp. Ratio
58cc9.95 to 1
64cc9.42 to 1
70cc8.94 to 1

Download Piston Instructions

Piston Specs

Engine Brand: Chevy

Engine Family: Small Block Chevy

Engine Size: 420

With/Without Rings: Includes Rings

Cylinder Bore Size: 4.125 in - 104.7 mm

Ring Width: 1.2/1.2/3MM

Compression Height: 1.362"

Pin Diameter: .927

Connecting Rod Length: 5.700"

Crankshaft Stroke: 3.875"

Piston Series: 3-FX Series

Alloy: Forged 2618

Cylinder Head: SBC 23 Degree

TDC Assembly Height: 9.000

Piston Top Aprox. Comp. Ratio:

-28cc Dish Top
ChamberComp. Ratio
58cc9.95 to 1
64cc9.42 to 1
70cc8.94 to 1

Download Piston Instructions

Engine Power TV

The DSS FX, X-Groove Feature