Wiseco K445X3 Forged 4.030" LS V8 Piston Kit -15 cc Dish

Vehicle Fitment

• GM Chevrolet LS Series (Gen III/IV) V8 engines

Features

• Forged from high-strength 2618 aluminum for durability under load
• ArmorGlide® skirt coating to reduce friction and improve wear resistance
• -15 cc reverse-dome (dish) crown design for lower compression
• Anti-detonation and pressure-seal grooves to aid ring sealing
• Strutted skirt profile for structural stability
• Offset wrist-pins for compatibility with stroker crankshafts
• Floating 0.927" wrist pins with Spirolox retainers
• Valve-relief pockets for high-lift cams and large valves
• Includes full premium GFX ring set (1.2 / 1.2 / 3.0 mm)
• Pin upgrade recommended for very high-horsepower builds

Specifications

• Bore: 4.030 in
• Stroke: 4.000 in
• Rod Length: 6.125 in
• Compression Height: 1.110 in
• Piston Dish / Reverse Dome Volume: -15 cc
• Wrist Pin Diameter: 0.927 in
• Material: Forged 2618 aluminum alloy
• Approximate Weight per Piston: ~437 g
• Ring Set: 1.2 mm / 1.2 mm / 3.0 mm GFX

Included Components

• 8x forged pistons
• 8x 0.927" floating wrist pins
• 8x Spirolox pin retainers
• 8x GFX 1.2 / 1.2 / 3.0 mm piston ring sets

Product Description

The Wiseco K445X3 is a high-performance piston kit purpose-built for GM LS-series V8 engines (Gen III/IV). Its -15 cc reverse-dome (dish) crown design helps reduce compression, making it well-suited for aggressive builds, stroker configurations, or applications where detonation resistance is a priority.

Constructed from 2618 forged aluminum and coated with ArmorGlide®, these pistons deliver excellent durability, reduced friction, and tight ring seal. The strutted skirts and anti-detonation grooves contribute to stability and efficient sealing even in high-RPM or boosted environments.

This kit comes complete with floating wrist pins, Spirolox retainers, and a premium GFX ring set. The offset pin design enables compatibility with stroker cranks without the need to notch, giving engine builders flexibility in designing high-performance LS builds. For very high-power engines, Wiseco recommends upgrading the wrist pins to ensure reliability.