WISECO K444X7 Professional Series GM LS-Series Forged Dish Piston and Ring Set, 4.070-Inch Bore

Upgrade your GM LS-Series engine with the WISECO K444X7 Professional Series piston and ring set. Designed for performance-focused applications, this kit includes a forged dish piston engineered for strength, durability, and reliable operation under demanding engine conditions. The piston is designed for a 4.070-inch bore and features a 1.300-inch compression height for compatibility with properly matched LS-Series engine builds.
The dish profile provides a minus 11.00 cc volume, supporting compression ratio tuning based on the selected cylinder head, gasket, and rotating assembly components. The WISECO K444X7 uses 1.2 x 1.2 x 3.0 mm ring grooves and is supplied as a complete piston and ring set, helping simplify component selection during engine assembly. Always verify bore size, compression height, piston-to-valve clearance, ring fitment, and final compression ratio before installation.
WISECO manufactures the K444X7 for builders who need dependable forged piston performance in street, race, and high-output GM LS-Series applications. The professional-series design is intended for use with compatible connecting rods, wrist pins, cylinder walls, and engine management components. Follow the engine builder’s specifications for ring gap preparation, piston orientation, installation, and break-in procedures to achieve the best results.

Features:

• Brand: WISECO

• Part Number: K444X7

• Application: GM LS-Series engines

• Construction: Forged piston

• Piston Style: Dish

• Bore Size: 4.070 inches

• Compression Height: 1.300 inches

• Dish Volume: Minus 11.00 cc

• Ring Grooves: 1.2 x 1.2 x 3.0 mm

• Package Type: Piston and ring set

• Series: Professional Series