Wiseco K0425X125 Chevy LS 3.900 Stroker Forged Piston Kit 4.125 Bore .927 Pin

The Wiseco K0425X125 is a professional-grade forged piston kit engineered specifically for Chevy LS 3.900" stroker builds with a 4.125" bore and .927" wrist pin diameter. Designed for serious engine builders, this shelf-stock kit delivers custom-level performance and durability straight out of the box.

Key Features:

• 2618 High-Tensile Strength Alloy — forged, engineered, and CNC-machined in the USA at Wiseco's Mentor, Ohio facility for superior strength and consistency
• ArmorGlide® Skirt Coating — proprietary friction-reducing coating that is seizure resistant, quieter in operation, and improves wear resistance
• Optimized 3.900" Stroke Rod Angle Design — reduces bore distortion, minimizes crank and rod stress, and maintains consistent ring seal
• Precision Ring Grooves — includes anti-detonation groove and additional ring-seal features for power-adder applications
• Fully Machined Crown — precision-crafted for accurate compression ratios and consistent combustion
• Forced Pin Oiling — enhanced lubrication to the wrist pin for durability under heavy load
• H13 Wrist Pins Included — high-strength pins matched to the .927" bore
• 1.2mm / 1.2mm / 3.0mm GFX Ring Pack Included — premium rings suited for NA, boost, and nitrous applications

Built to withstand heavy to severe duty race conditions, the Wiseco K0425X125 piston kit is a proven choice for LS stroker engine builds targeting increased displacement and power output across naturally aspirated, boosted, and nitrous-fed applications.