Wiseco 60004RX125 Forged Dome Piston for LS7 4.125" Bore 1.175" Compression Height

The Wiseco 60004RX125 is a high-performance forged piston designed specifically for GM LS7 engines with 4.125-inch bore applications. This individual RIGHT-side piston features a +2.5cc dome design and 1.175-inch compression height, engineered for use with stock LS7 connecting rods (6.067-inch rod length) and 4.000-inch stroke crankshafts.

Key Features:

• Forged from high-grade 2618 aluminum alloy for superior strength and heat resistance
• +2.5cc dome design optimizes compression ratio (approximately 11.3-11.5:1 depending on chamber volume)
• 1.175-inch compression height for proper deck clearance
• Offset pin design matching OE specifications for reduced friction
• Radiused valve pockets for detonation resistance and improved flow
• Strutted skirt design allows tight piston-to-wall clearances (.004" minimum)
• Designed to accommodate reluctor rings on stroker crankshafts without pin boss notching
• Compatible with Wiseco pin part number S761 (.9252" x 2.250")

This piston is part of Wiseco's X-Series Professional line, engineered and manufactured in Mentor, Ohio using precision CNC machining and forging processes. The advanced skirt profile provides minimal cylinder wall friction, reduced noise, and excellent wear characteristics for both street and high-performance racing applications. Designed for builds targeting over 1,500 horsepower capability.

Note: This is a single piston sold individually. Rings, wrist pin, and clips sold separately. For complete piston kit with rings, see Wiseco kit K0004X125.