Overview 

The UEM Icon Elite piston set is specifically designed for GM LS2, LS3, LSA, and LS9 engines in both 6.0L and 6.2L configurations. With a 4.005" bore and a 4.100" stroke, these forged 2618 aluminum pistons feature a -20cc dished top, making them ideal for boosted or nitrous applications where lower compression is desired. They are compatible with 6.125" connecting rods and .927" wrist pins, and have a compression height of 1.065". These pistons provide a compression ratio of 9.9:1 with 64.5cc heads or 9.5:1 with 68.4cc heads. Additional features include CNC-machined valve reliefs, anodized crown and top land, accumulator grooves for better sealing, offset wrist pins to reduce piston slap, and a low-friction M42 skirt coating. Their robust construction and premium features make them a reliable choice for high-performance forced induction builds.

Features 

• Designed for GM LS2, LS3, LSA, LS9 (6.0L / 6.2L engines)

• 4.005" bore size

• 4.100" stroke

• -20cc dished piston design (ideal for boosted or nitrous setups)

• Forged 2618 aluminum construction for strength and durability

• Compatible with 6.125" connecting rods

• .927" wrist pin diameter

• 1.065" compression height

• Compression ratio:
• 9.9:1 with 64.5cc heads
• 9.5:1 with 68.4cc heads

• 413g piston weight (excluding pin)

• Ring pack: 1.2mm / 1.2mm / 3.0mm (rings not included)

• CNC-machined valve reliefs for precision fit

• Anodized crown and top land for heat resistance

• Accumulator groove to reduce ring flutter

• Offset wrist pins to reduce noise and wear

• M42 skirt coating to reduce friction and extend piston life