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DSS Racing Piston and Rings Kit K2-5000-4050; FX Series 4.050 in. -5.00 cc Flat Top for 1958 to 1976 Ford 390 FE
$864.95
Part #: K2-5000-4050
Brand: DSS Racing
UPC: 00194403078589
Estimated Ship Date: 9/29/2025 (From manufacturer)
This item ships free with qualifying orders of $150 or more.
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Details
- 2618 Alloy
- Strong, Heat Resistant 2618 Alloy
- Substantially Stronger than Hypereutectic Type Cast Pistons
- Proprietary "DMAX" Multi Stage Forging Process, Produces' a Superior Forging
- Drilled Forced Wrist Pin Oiling
- Drilled Bottom Ring Land Intersecting Oil Drain Backs
- Forged and Machined in Saint Charles Illinois USA!
- Boost and NOS Ready! (Moderate to High Levels)
- Fully Machined Piston Crown
- Advanced Profile Precision Diamond-Turned Skirts
- Larger CNC Machined Valve Reliefs for More Aggressive Head & Cam Combinations
- Heavy-Duty Piston Pins
- Precision CNC Finished Pin Bores
- Double True Arc Pin Locks Provide Redundancy
- Full Floating or Press Fit
- Includes matching DSS Racing ring set
- Advanced Ring Lands Featuring a Combination of Accumulators and Drilling Ops.
- 6 additional areas of CNC milling for weight reduction in non critical areas.
- Thinner Ring Grooves Maximize Critical Ring Land Strength
- Patented "X Groove" Skirt for Superior Cylinder & Ring Performance & Durability
- CNC Tear out notch makes optional Spiro Locs removal easy.
- Drilled Forced Wrist Pin Oiling
- Drilled Bottom Ring Land Intersecting Oil Drain Backs
- Forged and Machined in Saint Charles Illinois USA!
- Boost and NOS Ready! (Moderate to High Levels)
- Fully Machined Piston Crown
- Advanced Profile Precision Diamond-Turned Skirts
- Larger CNC Machined Valve Reliefs for More Aggressive Head & Cam Combinations
- Heavy-Duty Piston Pins
- Precision CNC Finished Pin Bores
- Double True Arc Pin Locks Provide Redundancy
- Full Floating or Press Fit
- Includes matching DSS Racing ring set
- Advanced Ring Lands Featuring a Combination of Accumulators and Drilling Ops.
- 6 additional areas of CNC milling for weight reduction in non critical areas.
- Thinner Ring Grooves Maximize Critical Ring Land Strength
- Patented "X Groove" Skirt for Superior Cylinder & Ring Performance & Durability
- CNC Tear out notch makes optional Spiro Locs removal easy.
Product Description
390 FE Ford, K2 FX 2618 Alloy, Comp Height: 1.775", -5cc Flat Top, PIN: .975", Full Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 3.784", ROD: 6.489", Includes matching DSS Racing ring set, Appox Comp Ratio: 65cc-11.18, 72cc-10.36, 76cc-9.93 NOTE: Effective July 7, 2025, all FE Ford ring grooves have been updated to the new specifications of 1.2-1.2-3mm. Parts manufactured prior to this date feature ring grooves with dimensions of 1/16-1/16-3/16.
Specifications
- Piston and Rings Kit Series:
- FX Series
- Year:
- 1958 to 1976
- Make:
- Ford
- Engine:
- 390 FE
- Bore:
- 4.050 in.
- Stroke:
- 3.784 in.
- Rod Length:
- 6.489 in.
- Compression Height:
- 1.775 in.
- Crown Volume:
- -5.00 cc Flat Top
- Cylinder Head Volume to Calculate Compression Ratio:
- 72.00 cc
- Compression Ratio:
- 10.33:1
- Pin Diameter:
- 0.975 in.
- Piston Material:
- Forged 2618 Alloy
- Ring Lands:
- 1.2, 1.2, 3mm
- Gas Porting:
- None
- Notes:
- FE Flat Top
- Quantity:
- Sold As Kit (8/pkg)
