JE Pistons 360830 Ultra Series Forged Piston Set Bore Dome - 2618 3.630 8-Cylinder

The JE Pistons 360830 Ultra Series Piston Set is an 8-cylinder forged piston kit built for high-horsepower Ford Modular Coyote 5.0L applications. Machined from 2618 aluminum alloy using JE's proprietary Aligned Grain Flow forging technology, these pistons feature a 2.5cc dome, 3.630" bore, 1.174" compression distance (CD), and 0.866" wrist pin diameter — engineered to handle the extreme cylinder pressures of boosted and power-adder builds.

Key Features:

• Aligned Grain Flow Forging: Exclusively available on JE Ultra Series, this proprietary 2618 alloy forging process delivers superior tensile strength over traditional 2618 forgings, ideal for high-boost and nitrous applications
• Thermal Barrier Ceramic Crown Coating: Reflects heat into the combustion chamber to reduce piston crown temperatures and improve exhaust gas scavenging
• Perfect Skirt Coating: JE's patented screen-style skirt coating is 3x thicker than traditional coatings, reducing friction and allowing tighter piston-to-wall clearances while eliminating cold-start slap and false knock on computer-controlled engines
• Lateral Gas Ports: Maintain power-producing ring seal at the top compression ring under high RPM and high boost conditions
• Thicker Ring Lands: Added material for increased durability in high cylinder pressure environments
• Dual Pin Oiling: Enhanced oiling design keeps the wrist pin, pin bores, and connecting rod small-end lubricated to reduce heat, friction, and wear
• 9310 Alloy Wrist Pins: Premium thick-wall pins manufactured by Trend Performance in the USA; 0.866" diameter, 2.250" length, 0.230" wall thickness
• Ring Groove Dimensions: Machined for 1.0mm, 1.2mm, and 2.8mm rings (rings sold separately)
• Made in the USA

Specifications:

• Alloy: 2618 Forged Aluminum
• Crown Style: Dome (2.5cc)
• Bore Diameter: 3.630 in.
• Compression Distance (CD): 1.174 in.
• Wrist Pin Diameter: 0.866 in.
• Stroke: 3.650 in.
• Rod Length: 5.933 in.
• Cylinders: 8
• Includes: Wrist pins and wire lock retainers
• Rings: Sold separately

The JE Pistons 360830 Ultra Series set is rated for applications from 800 HP to 1,500+ HP, making it an ideal choice for both sleeved and standard liner builds. Compatible with both naturally aspirated and forced induction Ford 5.0L Coyote (Gen 1–2) engines, these pistons deliver custom-level features in a shelf part number.