Wiseco K471X25 Forged 4.080" 6.1 L Hemi Piston Kit +4 cc Dome

Vehicle Fitment

• Chrysler / Dodge / Jeep 6.1 L Gen-3 Hemi V8 (2005-2010)
• Examples: 300 SRT8, Charger SRT8, Challenger SRT8, Grand Cherokee SRT8

Features

• Forged from high-strength 2618 aluminum alloy for durability
• ArmorGlide® skirt coating to minimize friction and wear
• +4 cc dome for increased compression and performance
• Anti-detonation and pressure-seal grooves for improved ring sealing
• Strutted skirt design for improved rigidity under load
• Floating 0.927" wrist pins with Spirolox retainers for secure assembly
• High-performance ring set included (1.2 / 1.2 / 3.0 mm)
• Designed for use with standard stroke crankshaft (3.580")
• Optimized for racing, boosted, or high-stress street builds

Specifications

• Bore: 4.080 in
• Stroke: 3.580 in (standard 6.1 L Hemi crank)
• Rod Length: 6.243 in
• Compression Height: 1.205 in
• Piston Dome Volume: +4 cc
• Wrist Pin Diameter: 0.927 in
• Material: Forged 2618 aluminum
• Approximate Weight per Piston: ~452 g
• Ring Set: 1.2 mm / 1.2 mm / 3.0 mm

Included Components

• 8x Forged Wiseco pistons
• 8x Floating wrist pins (0.927 in)
• 8x Spirolox retainers
• 8x High-performance ring sets (1.2 / 1.2 / 3.0 mm)

Product Description

The Wiseco K471X25 is a professional-grade forged piston kit engineered for the 6.1 L Gen-3 Hemi V8 found in several Chrysler, Dodge, and Jeep SRT8 models from 2005-2010. With a 4.080" bore and a +4 cc dome, these pistons are optimized to raise compression for better power output while maintaining reliability in high-performance environments.

Crafted from 2618 aluminum and coated with ArmorGlide®, these pistons offer excellent strength, reduced friction, and longer life under stress. The strutted skirts provide strong structural support, while anti-detonation grooves help maintain consistent ring seal under extreme conditions. Designed to work with the standard 3.580" stroke crank and 6.243" rods, these pistons integrate easily into high-performance Hemi builds.

The kit comes complete with floating wrist pins, Spirolox retainers, and a premium 1.2 / 1.2 / 3.0 mm ring set. This makes the K471X25 ideal for builders aiming for a high-compression, high-performance 6.1 L Hemi combination, whether for street or racetrack applications.