Wiseco K447X3 Professional Chevy LS Forged Piston Set 4.030 in. Bore 12cc Dome

Wiseco K447X3 is a Professional Series forged piston set engineered for Chevrolet LS engines running a standard stroke. Designed for serious racers and builders who demand maximum performance and reliability, this shelf-stock kit delivers high-compression dome piston performance right out of the box.

Key Specifications:

• Bore Diameter: 4.030 in.
• Compression Height: 1.300 in.
• Wrist Pin Diameter: 0.927 in.
• Stroke: 3.622 in. (LS Standard Stroke)
• Rod Length: 6.125 in.
• Crown Volume: +12cc Dome
• Piston Weight: ~545 grams
• Ring Grooves: 1.2mm / 1.2mm / 3mm

Key Features:

• 2618 High-Strength Aluminum Alloy — USA-forged for superior tensile strength and durability under extreme loads
• ArmorGlide® Skirt Coating — reduces friction, improves seizure resistance, and contributes to quieter operation
• Fully Machined Dome Crown — precision-machined for consistent combustion chamber efficiency and high compression
• Anti-Detonation & Pressure Seal Grooves — enhance ring seal performance and protect against detonation damage
• Forced Pin Oiling — ensures effective wrist pin lubrication under severe-duty conditions
• LS1/LS2/LS6 Valve Pockets — designed for compatibility with standard LS valvetrain geometry
• Compatible with Aftermarket and K1 Connecting Rods
• Suitable for Naturally Aspirated, Boosted, and Nitrous Applications

The K447X3 kit includes eight forged pistons, a premium ring set (1.2/1.2/3mm), and wrist pins with Spirolox retainers. Pin upgrade is recommended for builds exceeding 700 horsepower. This is a shelf-stock kit, meaning no custom lead time is required — ideal for engine builders working on a schedule.