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Ultra Series forged pistons from JE are the industry?s strongest, most fully featured pistons available off the shelf. Offered for a wide range of domestic applications from LS to Big Block and HEMI to Ford Modular, Ultra Series pistons feature JE?s proprietary Aligned Grain Flow forging technology providing next-level tensile strength ideal for the extreme cylinder pressures of power adder engine builds. Equipped with custom level features including thermal barrier crown coating, skirt coating, gas ports, and more, Ultra Series are the ideal pistons for your boost-heavy or nitrous-huffing V8 engine build. As with all JE Pistons products, Ultra Series pistons are made 100% in the USA.
- Designed for Power: Every feature on Ultra Series Pistons are optimized to perform high-horsepower racing engines
- Aligned Grain Flow Technology: Exclusively available on JE Ultra Series, this proprietary, in-house forging process maximizes tensile strength to withstand the stresses of high-performance engine environments
- Skirt Coating: Reduces friction and wear on piston skirts and cylinder walls while simultaneously reducing operating noise, especially on cold start
- Thermal Barrier Crown Coating: This ceramic-based coating reflects heat into the combustion chamber, therefore reducing piston crown temperatures and improving exhaust gas scavenging
- High-Strength Wrist Pins: Premium thick-wall wrist pins are manufactured by Trend Performance in the USA and are designed for the demands of high-performance/power-adder builds
- Lateral Gas Ports: Help maintain power-producing ring seal at the top compression ring, even in high RPM and high boost situations
- Optimized Pin Oiling: Enhanced pin oiling features keep pin, pin bores, and small-end lubricated for reduced heat, friction, and wear
- Made 100% in the USA
Attributes:
- Brand Name: JE Pistons
- GTIN: 00193564033994
- Add-On: 927-073-MW
- Bore Diameter: 4.065
- Bore Diameter - Web: 4.065 IN
- Compression Height: 1.295
- Compression Ratio: 10.00:1 / 65.50 CC Head
- Connecting Rod Length: 6.125
- Cylinder Head: GEN 5 LT4
- Deck Height: 9.240
- Engine: LT4 (Gen V)
- Engine - Web: LT4 (Gen V)
- Engine Displacement: 376
- Engine Family: LS
- Engine Stroke: 3.622
- Engine Type: ICE
- Forging Type: FSR
- Industry: Automotive
- Make: Chevrolet
- Make - Web: Chevrolet
- OEM Bore Diameter: 4.065
- Oil Ring Thickness: 0.119
- Out of Stock Message: Please Allow Approximately 3 Weeks or Less for Shipping
- Oversized: No
- Oversized Amount: Standard
- Piston Head Type: Dish
- Piston Material: 2618
- Piston Series: JE Ultra Series
- Piston Sub-Series: LT4 (Gen V)
- Piston Volume: -6.30
- Product Market: Domestic
- Product Type: Engine Piston Kit
- Ring Set - Recommended: JG31F8-4070-0
- Ring Set Included: No
- Ring Set Thickness: 1.20 MM x 1.50 MM x 3.00 MM
- Second Compression Ring Thickness: 0.0600
- Top Compression Ring Thickness: 0.0475
- Wrist Pin Included: Yes
- Wrist Pin Length: 2.250
- Wrist Pin Material: 9310 Nickel Carbon Steel Alloy
- Wrist Pin Outer Diameter: 0.927
- Wrist Pin Part Number: 927-2250-18-93C
- Wrist Pin Retainer Included: Yes
- Wrist Pin Retainer Part Number: 927-073-MW
- Wrist Pin Wall Thickness: 0.200
Extended Information:
- Country of Origin: US
- Emissions : Racing or Pre-Emissions Use Only
- Life Cycle Status: Available To Order
Packing Information:
- Quantity of Each: 1
- Package UOM: EA
- Dimension: 26.000 x 12.000 x 6.000 inches
- Weight: 13.500 lb
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Shipping + Returns Shipping Policy We aim to provide a seamless shipping experience, ensuring your order arrives on time and in perfect condition. Orders are typically processed within 1-2 business days, and shipping times vary based on your location. You will receive a tracking number as soon as your order is dispatched. We offer both standard and expedited shipping options. Please note, delivery times may be affected by holidays or high demand periods. International Shipping For international orders, shipping costs and delivery times will depend on the destination. Additional customs fees may apply, which are the responsibility of the customer. Returns Policy We want you to be completely satisfied with your purchase. If you need to return an item, please contact us within 30 days of receiving it. To be eligible for a return, items must be unused, in original condition, and with all tags attached. How to Initiate a Return To start a return, contact our customer support team with your order number and reason for return. Once approved, we’ll provide instructions on how and where to send your package. Please note that return shipping costs are the responsibility of the customer, unless the item was damaged or incorrect upon arrival. Refunds Once we receive your returned item, our team will inspect it and process your refund. You’ll receive a confirmation email once your refund is complete, typically within 5-7 business days.