Overview
The UEM Icon Elite piston set for GM LS2, LS3, LSA, and LS9 engines (6.0L and 6.2L) features a 4.005" bore and a 4.000" stroke, optimized for high-performance naturally aspirated or power-adder setups. These pistons are made from forged 2618 aluminum, offering excellent strength under extreme conditions. With a flat-top design and +4cc crown volume, they are compatible with 6.125" connecting rods and .927" wrist pins. The pistons have a 1.115" compression height and deliver a compression ratio of approximately 11.5:1 with 64.5cc heads or 11.0:1 with 68.4cc heads. Key enhancements include CNC-machined valve reliefs, anodized crown and top land for durability, accumulator grooves for improved ring sealing, offset wrist pins for reduced piston slap, and M42 skirt coating to lower friction and wear. This combination of features makes them ideal for high-RPM street or race engines.
Features
- Engine Compatibility: GM LS2, LS3, LSA, LS9 (6.0L / 6.2L)
- Bore Size: 4.005"
- Stroke: 4.000"
- Piston Design: Flat-top with +4cc crown volume
- Material: Forged 2618 aluminum for high strength and thermal resistance
- Rod Length Compatibility: 6.125"
- Wrist Pin Diameter: .927"
- Compression Height: 1.115"
- Compression Ratios:
- ~11.5:1 with 64.5cc cylinder heads
- ~11.0:1 with 68.4cc cylinder heads
- CNC-machined valve reliefs for precise fit
- Anodized crown and top land for added durability
- Accumulator grooves to reduce ring flutter and improve sealing
- Offset wrist pins to reduce piston slap and noise
- M42 skirt coating for reduced friction and extended wear life