Mahle MS Piston Set

Compatible with All 5.7L and 6.1L HEMI Engines

930276027

Overview:

The Mahle MS Piston Set is a high-performance piston kit engineered specifically for 347 cubic inch displacement stroker builds based on the iconic 5.7L HEMI platform. Designed to work seamlessly with all 5.7L and 6.1L HEMI cylinder heads, this piston set offers a reliable upgrade path for enthusiasts seeking enhanced durability and optimized combustion chamber dynamics. Ideal for stroker engine builds, these pistons provide a precise fit and consistent performance for both street and track applications.

Built to exacting standards, the Mahle MS Piston Set supports a 3.927-inch bore diameter with a 1.205-inch compression height, paired with a 3.579-inch stroke and 6.242-inch connecting rods. This combination delivers a balanced and robust foundation for increased displacement and power potential.

Key Features:

Mahle’s MS Piston Set incorporates advanced engineering and quality materials to ensure longevity and performance under demanding conditions. Key features include:

• Designed for 347cid stroker engines based on the 5.7L HEMI platform
• Compatible with all 5.7L and 6.1L HEMI cylinder heads
• Bore size: 3.927 inches with a dome piston design for improved combustion
• Compression height: 1.205 inches for optimal piston-to-pin fitment
• Stroke length: 3.579 inches to achieve increased displacement
• Connecting rod length: 6.242 inches for precise piston travel
• Piston pin diameter: 0.927 inches for durable wrist pin connection
• Combustion chamber volume: 10.2cc dome for a 10.8:1 compression ratio
• Lightweight design at 442 grams per piston to reduce reciprocating mass
• Manufactured from 2618 aluminum alloy for superior strength and heat resistance

Construction & Design:

Mahle’s MS Pistons are crafted from premium 2618 aluminum alloy, known for its excellent strength-to-weight ratio and thermal stability. This alloy is widely used in high-performance and racing applications due to its ability to withstand extreme combustion pressures and temperatures without compromising durability. The dome-shaped piston crown is engineered to optimize combustion efficiency and support a 10.8:1 compression ratio, enhancing power output while maintaining reliability.

The pistons feature a precise bore and pin diameter to ensure a tight, secure fit with the connecting rods and wrist pins. Their lightweight construction at 442 grams per piston reduces reciprocating mass, contributing to improved throttle response and engine balance. The design also accommodates the longer stroke and rod length typical of stroker builds, ensuring smooth operation throughout the engine’s RPM range.

Installation & Fitment:

This piston set is designed for direct compatibility with all 5.7L and 6.1L HEMI cylinder heads, making it an excellent choice for builders upgrading to a 347cid stroker configuration. Installation requires standard engine assembly procedures, and it is recommended to verify clearances and ring end gaps during installation to ensure optimal performance and longevity. No special modifications to the cylinder heads are necessary, but professional installation is advised to guarantee proper fitment and engine reliability.

What’s Included

• Set of four Mahle MS pistons (347cid, 3.927 x 1.205CH)
• Precision wrist pins (0.927 inch diameter)
• Compatible with 3.579-inch stroke and 6.242-inch connecting rods

Ideal For:

This piston set is ideal for automotive enthusiasts and engine builders looking to increase displacement and performance in 5.7L and 6.1L HEMI engines. Whether building a street performance stroker or a track-focused powerplant, the Mahle MS Pistons provide a durable, high-quality foundation for enhanced combustion and power delivery. Perfect for those upgrading their HEMI engines to achieve a balance of reliability and performance gains.

MAHLE is a major engine-technology name, and MAHLE Motorsport’s POWERPAK piston kits are built for enthusiasts, racers, and engine builders who demand strength and consistency under high RPM, boost, and heat. From forged pistons and rings to proven engineering across racing disciplines, MAHLE components are often chosen when reliability is as important as peak power.