JE Pistons Chevrolet LS Gen III/IV Piston – 4.005 in. Bore – 1.065 in. CH, -5.00 CC Set of 1 311991R

JE Pistons Chevrolet LS Gen III/IV Piston – 311991R

Looking to boost your engine’s performance with top-notch components? The JE Pistons Chevrolet LS Gen III/IV Piston – 4.005 in. Bore – 1.065 in. CH, -5.00 CC is just what you need. This premium piston, part number 311991R, is designed specifically for Chevrolet LS engines, ensuring a perfect fit and optimal performance.

Why Choose JE Pistons?

With over 75 years of experience in the industry, JE Pistons is a recognized leader in forged racing pistons. Each piston is engineered, forged, and machined right here in the USA, tailored to meet the demands of various racing applications. Whether you’re hitting the dirt track or the drag strip, these pistons have proven their worth time and again, helping racers achieve victory.

Key Features

< li >Premium Material: Crafted from 2618 aluminum, these pistons offer exceptional tensile strength, perfect for high-performance scenarios.

< li >Optimized Design: Each piston is tailored to specific engine applications, ensuring durability and performance that can withstand the rigors of racing.

< li >Forged Side Relief (FSR): This innovative design minimizes friction and power loss, thanks to reduced skirt width and a lighter wrist pin.

< li >Skirt Coating: Depending on your application, the skirt coating reduces friction and wear on both the piston skirts and cylinder walls, while also lowering operating noise.

< li >Accumulator Groove: This feature helps alleviate pressure from combustion gases, reducing ring flutter and enhancing ring seal for consistent power delivery.

< li >Made in the USA: Quality you can trust, with every piston manufactured domestically.

Specifications at a Glance

< li >Piston Series: JE Pistons

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

< li >Bore Diameter: 4.005 inches

< li >Piston Head Type: Flat

< li >Compression Height: 1.065 inches

< li >Piston Volume: -5.00 CC

< li >Piston Material: 2618 Aluminum

< li >Piston Quantity: Sold individually (Set of 1)

< li >Forging Type: FSR

< li >Piston Orientation: Right

< li >Average Weight: 350 grams

< li >Top Compression Ring Thickness: 0.0480 inches

< li >Second Compression Ring Thickness: 0.0600 inches

< li >Wrist Pin Material: 5115 Low Carbon Steel, Case Hardened

< li >Wrist Pin Outer Diameter: 0.927 inches

< li >Wrist Pin Length: 2.250 inches

< li >Wrist Pin Wall Thickness: 0.150 inches

Customer Feedback

Customers rave about the performance and reliability of JE Pistons. Many have noted significant improvements in their engine’s responsiveness and overall power. Users appreciate the meticulous engineering that goes into each piston, highlighting how these components have helped them achieve their racing goals.

Fitment Information

This piston is specifically designed for Chevrolet LS Gen III/IV engines, ensuring compatibility and optimal performance. Whether you’re building a track-ready engine or just looking to upgrade, the 311991R piston is an excellent choice for your high-performance needs.

Upgrade your engine with the precision and quality of JE Pistons, and feel the difference in your ride!

WARNING: Cancer and Reproductive Harm