Overview
The UEM Icon Elite piston set is built for GM LS2, LS3, LSA, and LS9 engines in both 6.0L and 6.2L variants. With a 4.030" bore and 4.000" stroke, these forged 2618 aluminum pistons feature a -20cc dished top design, making them ideal for boosted applications such as turbocharged, supercharged, or nitrous-assisted builds. They are designed to work with 6.125" connecting rods and .927" diameter wrist pins, with a compression height of 1.115". These pistons offer a compression ratio of around 9.7:1 with 64.5cc heads and 9.4:1 with 68.4cc heads. They come with performance-enhancing features like anodized crown and top land for thermal protection, CNC-machined valve reliefs, accumulator grooves for better ring seal, offset wrist pins to reduce piston slap, and an M42 skirt coating to lower friction. Each piston weighs 413 grams (excluding the 121g pin) and includes round wire locks and a high-performance 1.2mm/1.2mm/3.0mm ring pack. This set is optimized for strength, sealing, and durability under high-stress, high-horsepower conditions.
Features
Engine Fitment: GM LS2, LS3, LSA, LS9 – 6.0L / 6.2L engines
Bore: 4.030"
Stroke: 4.000"
Piston Type: -20cc dished top – ideal for forced induction/nitrous
Material: Forged 2618 aluminum – ultra-strong and heat-resistant
Rod Length: Compatible with 6.125" connecting rods
Wrist Pin: .927" floating wrist pin
Compression Height: 1.115"
Compression Ratios:
- ~9.7:1 with 64.5cc cylinder heads
- ~9.4:1 with 68.4cc cylinder heads