JE Pistons – JE Ultra Series Chevrolet LS Gen III/IV Piston – 4.000 in. Bore – 1.115 in. CH, -26.10 CC Set of 1 312039R

JE Ultra Series Chevrolet LS Gen III/IV Piston – 4.000 in. Bore – 1.115 in. CH, -26.10 CC (Part Number: 312039R)

Looking to boost your LS Gen III or IV engine performance? The JE Ultra Series Piston is designed specifically for high-horsepower applications, making it a perfect fit for your Chevrolet. With a bore diameter of 4.000 inches and a compression height of 1.115 inches, this piston is engineered to handle extreme cylinder pressures, ideal for those power adder builds.

Key Features

< li >Designed for Power: Every aspect of the Ultra Series Pistons is optimized for high-performance racing engines.

< li >Aligned Grain Flow Technology: This exclusive forging process maximizes tensile strength, ensuring durability under high-performance conditions.

< li >Skirt Coating: Reduces friction and wear on the piston skirts and cylinder walls, while minimizing operating noise, especially during cold starts.

< li >Thermal Barrier Crown Coating: A ceramic-based coating that reflects heat back into the combustion chamber, lowering piston crown temperatures and enhancing exhaust gas scavenging.

< li >High-Strength Wrist Pins: Manufactured by Trend Performance in the USA, these thick-wall wrist pins are built to withstand the demands of power-adder applications.

< li >Lateral Gas Ports: These ports maintain a reliable ring seal at high RPMs and boost levels, ensuring consistent power delivery.

< li >Optimized Pin Oiling: Enhanced features keep the wrist pin and bores lubricated, reducing heat and wear.

< li >Made 100% in the USA: Quality you can trust from a brand that prioritizes American craftsmanship.

Specifications

< li >Piston Series: JE Ultra Series

< li >Cylinder Head Compatibility: LS 12 DEG/15 DEG COMBO VR

< li >Bore Diameter: 4.000 inches

< li >Piston Head Type: Dish

< li >Compression Height: 1.115 inches

< li >Piston Volume: -26.10 CC

< li >Piston Material: 2618

< li >Forging Type: FSR

< li >Piston Orientation: Right

< li >Piston Average Weight: 392 GR

< li >Ring Set Included: No

< li >Top Compression Ring Thickness: 0.0480 inches

< li >Second Compression Ring Thickness: 0.0600 inches

< li >Oil Ring Thickness: 0.149 inches

< li >Wrist Pin Outer Diameter: 0.927 inches

< li >Wrist Pin Length: 2.250 inches

< li >Wrist Pin Wall Thickness: 0.170 inches

< li >Sold As: Set of 1

Customer Feedback

Customers rave about the JE Ultra Series pistons, highlighting their exceptional durability and performance. Many users have noted significant improvements in their engine’s responsiveness and overall power output, especially in boosted applications. The quality craftsmanship and attention to detail have made these pistons a favorite among performance enthusiasts.

Upgrade your LS engine with the JE Ultra Series Piston (312039R) and experience the difference in performance and reliability. Your high-horsepower dreams are just a piston away!

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