Wiseco K0004X130 4.130" Forged Piston Kit for Chevy LS7 7.0L

Vehicle Fitment

• Chevrolet LS7 7.0 L / 427 ci (stock rod applications)

Features

• Forged from 2618 aluminum for high strength and durability
• ArmorGlide® skirt coating reduces friction and resists seizure
• +2.50 cc dome for increased compression potential
• Fully machined crown with LS7-specific valve reliefs
• Precision ring grooves with anti-detonation groove
• Forced pin oiling for improved wrist-pin lubrication
• Designed for severe-duty racing builds
• Floating 0.9252-in wrist pin for reliable high-RPM performance

Specifications

• Bore Diameter: 4.130 in
• Stroke: 4.000 in
• Compression Height: 1.175 in
• Piston Volume (Dome): +2.50 cc
• Piston Material: 2618 forged aluminum
• Wrist Pin Diameter: 0.9252 in (floating)
• Ring Set Included: Yes (GFX-style: 1.2 mm / 1.2 mm / 3.0 mm)
• Rod Length Compatibility: 6.067 in (stock LS7 rod)

Included Components

• 8x Forged pistons (K0004X130)
• 8x Floating wrist pins
• 16x Circlips
• Ring sets (compression and oil rings for each piston)

Product Description

The Wiseco K0004X130 is a high-performance, professional-series piston kit built for the Chevrolet LS7 7.0L engine. With a 4.130-inch bore and a +2.50 cc dome, this set is optimized for builds that aim to boost compression while maintaining reliability in high-stress applications.

Constructed from 2618 forged aluminum, these pistons are designed to withstand serious power - whether you're running naturally aspirated, nitrous, or forced induction setups. The ArmorGlide® coating on the skirts reduces friction, helping the pistons operate smoothly and resist seizure under load.

This kit is ideal for engine builders and racers looking to build or rebuild a high-output LS7 platform. Proper installation involves checking dome-to-head clearance, ring gap, and pin-to-wall clearance to maximize performance and longevity.