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Chrysler 6.1L HEMI 90.9mm Stroke 4.06in Bore +0.020 Oversize
597660C-8
Overview:
The Manley Performance Platinum Series piston set is engineered specifically for Chrysler 6.1L HEMI engines, featuring a 90.9mm stroke and a 4.06-inch bore with a +0.020 oversize. Designed for professional engine builders and serious enthusiasts, these pistons deliver exceptional strength and reliability for high-performance applications.
Whether you are building a street performance engine or a track-focused powerplant, this piston set offers the durability and precision needed to handle increased power and demanding conditions. You’ll benefit from improved combustion efficiency and consistent performance thanks to the carefully engineered dome shape and compression ratio.
Key Features:
Manley’s Platinum Series pistons incorporate advanced materials and design features to ensure superior performance and longevity:
Construction & Design:
The pistons are crafted from premium 2618 forged aluminum alloy, which offers a balanced combination of strength, toughness, and thermal conductivity. This material choice ensures the pistons can withstand the high cylinder pressures and temperatures typical of performance HEMI engines.
The cam and barrel skirt profiles are optimized to reduce piston slap and wear, contributing to smoother engine operation and longer service life. Additionally, the moly skirt coating on select pistons minimizes friction between the piston skirts and cylinder walls, enhancing efficiency and reducing heat buildup.
The tool steel wrist pins add another layer of durability, ensuring reliable connection between the piston and connecting rod even under extreme loads and RPMs.
Installation & Fitment:
This piston set is designed as a direct fit for Chrysler 6.1L HEMI engines requiring a 4.06-inch bore with a +0.020 oversize. It matches the factory stroke of 90.9mm and maintains the correct compression ratio for optimal performance.
Installation should be performed by experienced engine builders or technicians familiar with forged piston setups and precision machining. Proper cylinder honing and clearance measurements are essential to ensure correct fitment and performance.
What’s Included
Ideal For:
Manley Performance manufactures high-strength engine internals for serious builds—especially forged pistons, connecting rods, valves, and valvetrain components developed for racing and high-output street applications. If you’re building for boost, high compression, or sustained RPM, Manley is a common choice for parts engineered to take abuse and keep power reliable.
ETA stands for Estimated Time of Arrival. The date shown is calculated using our Available-to-Promise (ATP) system, which tracks real-time supplier commitments to determine when a product is expected to be available for delivery. Specifically, the date is calculated by adding 9 business days from the date a supplier has committed to ship the product, representing a worst-case scenario for when we can expect to receive inventory.
Please note: The ETA is an estimate, not a guarantee. While we work closely with our suppliers to keep dates as accurate as possible, delays due to shipping carriers, weather, customs, or supplier-side issues may occasionally push the actual arrival beyond the date shown. Likewise, inventory may arrive sooner than the ETA in many cases. If you would like to be notified for when this item arrives, sign up for our back in stock notifications!
597660C-8 Manley Performance 05-10 Chrysler 300 / 06-10 Dodge Charger / 08-10 Dodge Challenger Platinum Series 6.1L Hemi +.020 Oversize 10.7:1 CR 5cc Dome Piston Set. Engineered for high-performance builds, these pistons feature 2618 alloy forgings, moly-coated skirts, and tool steel wrist pins for unmatched strength and durability. The +.020 oversize design with a 10.7:1 compression ratio and 5cc dome optimizes power output and efficiency. Trusted by professionals, this piston set delivers precision and reliability for serious enthusiasts seeking championship-level performance.
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MADE IN THE USA
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Chrysler 6.1L HEMI 90.9mm Stroke 4.06in Bore +0.020 Oversize
597660C-8
Overview:
The Manley Performance Platinum Series piston set is engineered specifically for Chrysler 6.1L HEMI engines, featuring a 90.9mm stroke and a 4.06-inch bore with a +0.020 oversize. Designed for professional engine builders and serious enthusiasts, these pistons deliver exceptional strength and reliability for high-performance applications.
Whether you are building a street performance engine or a track-focused powerplant, this piston set offers the durability and precision needed to handle increased power and demanding conditions. You’ll benefit from improved combustion efficiency and consistent performance thanks to the carefully engineered dome shape and compression ratio.
Key Features:
Manley’s Platinum Series pistons incorporate advanced materials and design features to ensure superior performance and longevity:
Construction & Design:
The pistons are crafted from premium 2618 forged aluminum alloy, which offers a balanced combination of strength, toughness, and thermal conductivity. This material choice ensures the pistons can withstand the high cylinder pressures and temperatures typical of performance HEMI engines.
The cam and barrel skirt profiles are optimized to reduce piston slap and wear, contributing to smoother engine operation and longer service life. Additionally, the moly skirt coating on select pistons minimizes friction between the piston skirts and cylinder walls, enhancing efficiency and reducing heat buildup.
The tool steel wrist pins add another layer of durability, ensuring reliable connection between the piston and connecting rod even under extreme loads and RPMs.
Installation & Fitment:
This piston set is designed as a direct fit for Chrysler 6.1L HEMI engines requiring a 4.06-inch bore with a +0.020 oversize. It matches the factory stroke of 90.9mm and maintains the correct compression ratio for optimal performance.
Installation should be performed by experienced engine builders or technicians familiar with forged piston setups and precision machining. Proper cylinder honing and clearance measurements are essential to ensure correct fitment and performance.
What’s Included
Ideal For:
Manley Performance manufactures high-strength engine internals for serious builds—especially forged pistons, connecting rods, valves, and valvetrain components developed for racing and high-output street applications. If you’re building for boost, high compression, or sustained RPM, Manley is a common choice for parts engineered to take abuse and keep power reliable.
Free Standard Shipping on orders over $300. Select “Free Shipping” at checkout. *Exclusions apply on oversized and freight items.
Need to return an item? We make it easy. Email us and we'll send you a free return label with instructions on how to return.
Free Standard Shipping on orders over $300. Select “Free Shipping” at checkout. *Exclusions apply on oversized and freight items.
Need to return an item? We make it easy. Email us and we'll send you a free return label with instructions on how to return.
