Wiseco K395X125 Professional Piston Set 8 4.125" Bore for Chevy LS Engines

Vehicle Fitment

• Chevrolet LS engines -- 4.125" finished bore
• Verify bore, stroke, rod length, and compression height before ordering

Fitment Notes

• Designed for 4.000" stroke / 6.125" rod length / 1.115" compression height
• -8.46 CC dish piston volume -- verify compression ratio for your application
• Floating pin -- confirm pin retention method compatible with rods
• Designed for heavy to severe duty race builds

Features

• Professional Series -- no-expense-spared forged racing pistons
• 2618 aluminum -- improved tensile strength for high-stress applications
• ArmorGlide skirt coating -- seizure resistant, friction reduction, quieter operation
• Fully machined crown with precision ring grooves
• Anti-detonation groove and additional ring seal features
• Forced pin oiling
• Strutted forging design
• Engineered, forged, and machined in the USA
• Premium ring set included

Specifications

• Part Number: K395X125
• Series: Professional
• Application: Chevrolet LS
• Bore Diameter: 4.125"
• Stroke: 4.000"
• Rod Length: 6.125"
• Compression Height: 1.115"
• Piston Volume: -8.46 CC (dish)
• Piston Material: 2618 aluminum
• Skirt Coating: ArmorGlide
• Forging Type: Strutted
• Wrist Pin OD: 0.927"
• Wrist Pin Style: Floating
• Wrist Pin Material: 5115
• Top Compression Ring Thickness: 0.047"
• Second Compression Ring Thickness: 0.047"
• GTIN: 00193564072207
• Quantity: Set of 8

Included Components

• 8x Wiseco Professional Series forged pistons
• 8x 0.927" floating wrist pins (5115 steel)
• Premium ring set (top and second compression rings, oil rings)

Product Description

The Wiseco K395X125 is a Professional Series forged piston set of 8 for Chevrolet LS engines with a 4.125" bore, designed for heavy to severe duty race builds. Forged from 2618 aluminum for superior tensile strength under extreme thermal and mechanical loads, each piston features ArmorGlide skirt coating for seizure resistance and friction reduction, a fully machined crown with precision ring grooves, anti-detonation groove, forced pin oiling, and a strutted forging design. The -8.46 CC dish piston volume allows builders to tune compression ratio for their specific application.

Includes a full set of 8 pistons with 0.927" diameter floating wrist pins and premium ring sets. Engineered, forged, and machined in the USA by Wiseco.