Overview
The UEM Icon Elite piston set is specifically designed for GM LS2, LS3, LSA, and LS9 engines with 6.0L and 6.2L displacements, using a 4.070" bore and a 4.000" stroke. These high-performance pistons feature a -20cc dished top, optimized for use in forced induction or nitrous applications where lower compression is beneficial. Manufactured from premium 2618 forged aluminum, they offer outstanding strength and thermal resistance under extreme conditions. Designed for 6.125" rods and .927" floating wrist pins, each piston has a compression height of 1.115" and weighs approximately 413 grams (excluding the 121g wrist pin). The pistons are engineered to deliver a compression ratio of about 9.7:1 with 64.5cc heads or 9.4:1 with 68.4cc heads. Key features include CNC-machined valve reliefs, anodized crown and top land for durability, accumulator grooves for improved ring seal, offset wrist pins to minimize slap, and an M42 skirt coating for reduced friction. These pistons are built to perform in high-horsepower builds while maintaining long-term reliability.
Features
Engine Fitment: GM LS2, LS3, LSA, LS9 – 6.0L / 6.2L
Bore Size: 4.070"
Stroke: 4.000"
Piston Design: -20cc dished top (ideal for boosted/nitrous builds)
Material: 2618 forged aluminum – strong and heat-resistant
Rod Compatibility: 6.125" connecting rods
Wrist Pin: .927" floating pin
Compression Height: 1.115"
Compression Ratios:
- ~9.7:1 with 64.5cc cylinder heads
- ~9.4:1 with 68.4cc cylinder heads