Overview
UEM Piston GM LS2/LS3/LSA/LS9, 6.0L/6.2L 4.080/4 inch Stroke Dish -20 designed with a 4.080" bore and 4.000" stroke, this dished piston is ideal for boosted applications, such as turbocharging or supercharging, where a lower compression ratio is desired. The pistons are made from forged 2618 aluminum, providing exceptional strength, heat resistance, and durability under extreme conditions. Designed to work with 6.125" connecting rods and .927" floating wrist pins, the pistons feature a compression height of 1.115" and are compatible with a 9.240" deck height. Performance-enhancing features include CNC-machined valve reliefs for precise fitment, an anodized crown and top land for increased durability, and accumulator grooves that improve sealing and reduce ring flutter. The offset wrist pins help reduce piston slap, while the M42 skirt coating minimizes friction and wear, extending the life of the pistons.
Features
- Engine Compatibility: GM LS2, LS3, LSA, LS9 (6.0L / 6.2L)
- Bore Size: 4.080"
- Stroke: 4.000"
- Piston Design: Dished top (ideal for boosted applications)
- Material: Forged 2618 aluminum for strength and heat resistance
- Rod Length Compatibility: 6.125" connecting rods
- Wrist Pin Diameter: .927", floating pin
- Compression Height: 1.115"
- Piston Weight: 418 grams (excluding 121g wrist pin)