What is the advantage of using 4032 aluminum alloy for these pistons?

The 4032 aluminum alloy offers good tensile strength and has lower thermal expansion compared to other aluminum alloys. This means the pistons maintain more consistent clearance within the cylinder bore as the engine temperature changes, contributing to better performance and longevity.

What does 'forced pin oiling' mean for these pistons?

Forced pin oiling means that oil is actively directed to the wrist pin and connecting rod small end. This ensures consistent and adequate lubrication, which is crucial for reducing wear and heat in this high-stress area, especially in performance applications.

Are these pistons suitable for a daily driver engine build?

These pistons are part of the Sportsman Racing Products line, designed for mild to moderate performance engines suitable for street/strip use. While they are well-built and offer improved strength over stock, their primary design focus is performance rather than the extreme durability requirements of a heavy-duty daily driver.

JE Pistons 4.030in Piston Kit 138089

Name: JE Pistons Chevrolet Small Block 4.030in Bore 1.425in CH -5.00 CC Piston Kit
Brand: JE Pistons
SKU: je-pistons-je-pistons-chevrolet-small-block-4-030in-bore-1-425in-ch-5-00-cc-pist-t14-873587
Price: 624.99 USD
Availability: InStock

JE Pistons Chevrolet Small Block 4.030in Bore 1.425in CH -5.00 CC Piston Kit

$624.99

Only 1 left in stock

JE Pistons Chevrolet Small Block 4.030in Bore 1.425in CH -5.00 CC Piston Kit. Forged 4032 aluminum for street/strip builds.

Key Features

Fits Chevrolet Small Block engines with a 4.030 inch bore.
Forged from 4032 aluminum alloy for strength and reduced thermal expansion.
Flat top piston design with a 1.425 inch compression distance.
Features forced pin oiling for improved wrist pin lubrication.
Designed for street/strip applications.
Made 100% in the USA by JE Pistons.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

Secure CheckoutFast Shipping631-982-0042

Product Details

Forged from 4032 aluminum alloy, these JE Pistons Sportsman Racing Products (SRP) pistons are built for performance builds on a sportsman budget. They are designed to offer the strength and performance characteristics you expect from JE Pistons, but at a more accessible price point, making them a solid choice for someone looking to improve their Chevrolet Small Block engine without breaking the bank. The 4.030-inch bore size is a common specification for many popular Small Block Chevy applications.

The 4032 aluminum alloy is chosen for its good tensile strength and relatively low thermal expansion, which helps maintain consistent piston-to-wall clearance as the engine heats up. This material choice contributes to a well-built piston that can handle the demands of street and strip use. Each piston features forced pin oiling, a detail that ensures the wrist pin receives ample lubrication, reducing wear and improving longevity. These pistons are made 100% in the USA, reflecting JE Pistons' commitment to domestic manufacturing and quality control.

This kit includes a set of 8 flat-top pistons, each with a 4.030-inch bore, a 1.425-inch compression distance, and a 0.927-inch wrist pin. The flat-top design is versatile and works well with a variety of cylinder head chamber volumes. While these pistons are designed for performance, please note they are not CARB approved and cannot be shipped to California. If you're building a mild to moderate performance engine, these pistons offer a strong foundation.