Wiseco K394X3 Forged Flat-Top Piston and Ring Set for GM LS-Series, 4.030-Inch Bore, -8cc

Upgrade your GM LS-Series engine with the Wiseco K394X3 forged piston and ring set, engineered for performance applications requiring dependable strength and precise fitment. This kit features flat-top pistons designed for a 4.030-inch bore and a 1.115-inch compression height, making it a practical choice for Chevrolet LSX and compatible GM LS-Series builds. The -8cc piston configuration supports compression-ratio planning while providing a clean, performance-oriented design for naturally aspirated and other properly matched applications.
The forged construction delivers enhanced durability and resistance to the demanding conditions associated with high-performance engines. Each piston is designed with 1.2 x 1.2 x 3.0 mm ring grooves to accommodate the included ring package and support effective sealing, oil control, and consistent operation. The Wiseco K394X3 set is intended for builders who need reliable piston geometry and quality components for a performance-focused LS engine assembly.
This Wiseco piston and ring kit is supplied for GM LS-Series applications and is identified by part number K394X3. Verify bore size, compression height, ring specifications, crankshaft stroke, connecting rod length, cylinder-head chamber volume, and final deck height before installation to ensure proper compatibility and desired compression ratio. Professional installation and thorough measurement of all engine components are recommended for best results.

Features:

• Brand: Wiseco

• Part Number: K394X3

• Application: GM LS-Series and Chevrolet LSX engines

• Construction: Forged aluminum piston design

• Piston Style: Flat-top configuration

• Bore Size: 4.030 inches

• Compression Height: 1.115 inches

• Ring Grooves: 1.2 x 1.2 x 3.0 mm

• Piston Volume: Minus 8cc

• Kit Contents: Piston and ring set

• Use: Performance engine builds