DSS Racing FX Series Forged Piston Set

Fits Chrysler / Dodge / Jeep / Ram 6.1L SRT8 Models

1-6845-4085 / 2-6845-4085 / 3-6845-4085 / K1-6845-4085 / K2-6845-4085 / K3-6845-4085

Overview:

The DSS Racing 6.1 Stroker FX Series Forged Piston Set is engineered specifically for the Chrysler, Dodge, Jeep, and Ram 6.1L SRT8 engines. Designed to handle the increased demands of stroker builds and high-performance applications, these pistons provide exceptional strength and durability. Whether you are upgrading your engine for street performance, track use, or serious muscle car restoration, this piston set offers a reliable foundation for enhanced power and longevity.

Built to exacting specifications, these pistons feature a -18cc dish top design to optimize compression ratios and combustion efficiency. They are compatible with the 375 Small Block Mopar Hemi Gen III platform and are ideal for enthusiasts seeking a high-quality forged piston solution that fits most 6.1L SRT8 models.

Key Features:

These DSS Racing forged pistons incorporate advanced design elements and precision manufacturing to deliver superior performance and reliability:

• Forged construction for maximum strength and durability under high stress
• Comp height of 1.21" for precise piston-to-deck clearance
• 18cc dish top to optimize combustion chamber volume and compression ratio
• .927" wrist pin diameter with options for full-floating or press-fit installation
• Ring groove dimensions of 1.2mm / 1.2mm / 3mm for optimal ring sealing and reduced friction
• Designed for a 3.578" stroke and 6.243" connecting rod length, matching stroker configurations
• Available in multiple dish volumes (65cc, 74cc, 85cc) to tailor compression ratios from 7.88 to 9.39
• Precision CNC machining ensures consistent fit and performance
• Compatible with Mopar Gen III Hemi 6.1L engines used in SRT8 models

Construction & Design:

The DSS Racing FX Series pistons are crafted from high-grade forged aluminum alloy, providing an optimal balance of lightweight strength and thermal conductivity. The forging process enhances the metal grain structure, resulting in pistons that resist cracking, scuffing, and deformation under extreme heat and pressure.

The pistons feature a carefully engineered dish top design to control compression ratios and promote efficient combustion. The wrist pin bore is precision-machined to accept either full-floating or press-fit pins, allowing flexibility depending on engine build preferences. Ring grooves are cut to tight tolerances to maintain ring seal and reduce blow-by, contributing to improved engine efficiency and longevity.

Installation & Fitment:

This piston set is designed as a direct fit replacement for most Chrysler, Dodge, Jeep, and Ram 6.1L SRT8 engines, including stroker builds with a 3.578" stroke. Installation requires standard engine assembly procedures and may involve balancing and blueprinting for optimal performance. The pistons accommodate both full-floating and press-fit wrist pins, giving builders options based on their connecting rod and pin setup.

Proper ring end gap and piston-to-wall clearance should be verified during installation to ensure reliable operation. These pistons are compatible with factory and aftermarket components designed for the Mopar Gen III Hemi platform.

What’s Included

• Set of 8 DSS Racing FX Series forged pistons
• Wrist pin bore prepared for full-floating or press-fit pins
• Multiple dish volume options for compression ratio tuning

Ideal For:

This piston set is ideal for performance enthusiasts, engine builders, and professional shops upgrading or rebuilding Chrysler, Dodge, Jeep, and Ram 6.1L SRT8 engines. It suits stroker builds, high-boost applications, and naturally aspirated setups requiring durable forged pistons capable of handling increased cylinder pressures and RPM.

Whether you are building a street cruiser, drag racer, or track-focused muscle car, these pistons provide a solid foundation for reliable power gains and engine longevity.

DSS Racing — Founded in 1983 originally as Danny’s Speed Shop, DSS Racing has grown from a small Midwest performance engine shop into a respected name in forged engine components for the high-performance and racing markets. Based in St. Charles, Illinois, DSS is best known for its forged pistons and machined engine parts made in the USA that have been used in championship engines and thousands of builds, blending old-school racing roots with precision manufacturing for enthusiasts and racers alike.