Wiseco Professional Series Forged Racing Pistons

Chrysler 6.1L Gen III HEMI Small Block Mopar

K0113X25

Overview:

Wiseco’s Professional Series forged racing pistons are engineered for serious racers and high-performance engine builders who demand uncompromising strength and reliability. Designed specifically for the Chrysler 6.1L Gen III HEMI small block, these pistons deliver exceptional durability in heavy to severe duty race applications.

Whether you are building a track-focused race engine or a high-output street machine, these pistons provide the foundation for increased power and long-lasting performance. Each set comes complete with premium piston rings to ensure optimal sealing and efficiency under extreme conditions.

With a 4.080-inch bore and 4.050-inch stroke configuration, these pistons are tailored to fit the 3rd generation 6.1L HEMI, offering a -18.0 cc dome design that supports high compression ratios and aggressive combustion chamber dynamics.

Key Features:

These pistons incorporate advanced materials and design features to meet the demands of racing and high-performance builds:

• Forged from high-strength aluminum alloy for superior durability and resistance to thermal and mechanical stress.
• Professional Series pistons include a -18.0 cc dome volume, optimized for high compression and efficient combustion.
• Precision bore size of 4.080 inches and stroke compatibility of 4.050 inches for exact fitment in Chrysler 6.1L Gen III HEMI engines.
• Compression height of 1.090 inches and pin diameter of 0.927 inches, engineered for proper piston-to-rod clearance and stability.
• Supplied as a complete set of eight pistons, suitable for V8 engine configurations.
• Includes premium piston rings designed to maintain excellent sealing under racing conditions.
• Designed to withstand the rigors of heavy-duty and severe duty race environments without compromising performance.
• Manufactured with tight tolerances to ensure consistent performance and reliable engine operation.

Construction & Design:

Wiseco’s Professional Series pistons are crafted using advanced forging techniques that enhance the metal grain structure, resulting in pistons that are both lightweight and incredibly strong. The forged aluminum alloy construction offers excellent heat dissipation and resistance to detonation, critical for high-compression race engines.

The -18.0 cc dome design increases the piston’s compression ratio while maintaining optimal combustion chamber shape for improved power output and efficiency. Each piston is machined to precise specifications to ensure perfect fitment and balance within the Chrysler 6.1L Gen III HEMI engine architecture.

Installation & Fitment:

This piston set is designed specifically for the Chrysler 6.1L Gen III HEMI small block engine. Installation requires standard engine assembly procedures and is intended for professional or experienced engine builders familiar with high-performance builds.

These pistons are a direct replacement for factory components when used with compatible rods and cylinders of the specified bore and stroke. No modifications to the engine block are typically necessary when installing this piston set.

• Set of 8 pistons for V8 engine configuration
• Compatible with 4.080-inch bore and 4.050-inch stroke setups
• Designed for professional race and high-performance engine builds

What’s Included

• Set of 8 forged aluminum pistons with -18.0 cc dome
• Premium piston rings matched to the piston specifications

Ideal For:

• Serious racers building heavy-duty or severe duty race engines
• Performance enthusiasts upgrading Chrysler 6.1L Gen III HEMI engines for track or high-output street use
• Engine builders requiring durable, high-compression pistons for forced induction or naturally aspirated applications
• Anyone seeking reliable, precision-engineered pistons to maximize power and engine longevity under demanding conditions

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.