Wiseco Professional Series Forged Pistons

Chrysler 6.1L 3rd Gen HEMI

K471X25

Overview:

The Wiseco Professional Series forged pistons are engineered for serious racers and high-performance builders who demand uncompromising strength and durability. Designed specifically for the Chrysler 6.1L 3rd Generation HEMI engine, this piston set offers a precise 4.080-inch bore size with a +4cc dome volume to optimize combustion chamber dynamics.

These pistons are ideal for heavy to severe duty race builds, providing the reliability and performance needed to push your engine beyond factory limits. With premium piston rings included, you’ll get a complete, ready-to-install kit that supports aggressive tuning and high horsepower applications.

Whether you’re building a track-focused race engine or a high-output street machine, Wiseco’s Professional Series pistons deliver the strength and precision required for demanding environments.

Key Features:

Wiseco’s Professional Series pistons incorporate advanced design and manufacturing techniques to ensure maximum performance and durability:

• Forged from high-strength aluminum alloy for superior fatigue resistance and durability under extreme conditions.
• +4cc dome design enhances compression and combustion efficiency for improved power output.
• Precision-machined 4.080-inch bore diameter ensures exact fitment and optimal sealing.
• 1.205-inch compression height tailored for stock shelf pistons, maintaining proper deck clearance.
• 0.927-inch wrist pin diameter engineered for high load capacity and reduced piston weight.
• Includes premium piston rings designed to provide excellent sealing and wear resistance.
• Professional Series pistons are built to withstand heavy-duty racing conditions and high RPM operation.
• Designed specifically for Chrysler’s 6.1L 3rd Gen HEMI engines, ensuring perfect compatibility and performance.

Construction & Design:

Wiseco’s Professional Series pistons are crafted using state-of-the-art forging processes that produce a dense, uniform grain structure for enhanced strength and durability. The forged aluminum alloy construction offers a superior strength-to-weight ratio compared to cast pistons, reducing reciprocating mass and improving engine response.

The +4cc dome shape is CNC-machined to exact specifications, optimizing combustion chamber shape and compression ratio for performance gains without sacrificing reliability. The pistons feature a shelf stock compression height, allowing for straightforward installation in engines designed for factory-style pistons.

Each piston is precision balanced and finished to tight tolerances, ensuring consistent performance and longevity in demanding racing environments.

Installation & Fitment:

This piston set is designed as a direct replacement for Chrysler 6.1L 3rd Gen HEMI engines requiring a 4.080-inch bore size and stock compression height. Installation requires standard engine rebuild procedures and is intended for professional engine builders or experienced enthusiasts.

No modifications to the block or connecting rods are necessary when using these pistons within their specified dimensions. Proper ring end gap and clearance checks should be performed during assembly to ensure optimal performance and reliability.

What’s Included

• Set of 8 forged aluminum pistons with +4cc dome volume
• Premium piston rings matched to the piston design
• Complete piston pin bores sized for 0.927-inch wrist pins

Ideal For:

• High-performance and racing engine builds requiring durable forged pistons
• Builders upgrading Chrysler 6.1L 3rd Gen HEMI engines for increased compression and power
• Applications demanding heavy to severe duty use, including track and drag racing
• Engineers and enthusiasts seeking premium-quality pistons with proven reliability

Wiseco is a forged piston and engine-components brand trusted in both automotive and powersports performance, offering precision-made pistons and kits for high-RPM, high-boost, and high-load builds. Whether you’re rebuilding for durability or chasing serious horsepower, Wiseco parts are chosen for strength, consistency, and proven performance in demanding conditions.