Icon Pistons IC9986C.030 Forged Piston Set LS Bore - 5.3L 3.810

The Icon Pistons IC9986C.030 forged piston set is engineered for high-performance LS 5.3L engine builds requiring a 3.810-inch bore diameter. These pistons are precision-forged from high-strength aluminum alloy, providing exceptional durability and reliability for street performance, forced induction, and nitrous applications.

Key Features:

• Forged construction for maximum strength and thermal stability
• 3.810-inch bore diameter with .030-inch oversize
• Designed specifically for GM LS 5.3L engines
• Flat-top piston design optimizes compression ratio
• Premium ring package included for reliable sealing
• CNC-machined ring grooves for precise fit
• Lateral gas ports improve ring seal and reduce blow-by
• Engineered skirt profile reduces friction and noise

This complete set includes all pistons, rings, pins, and locks required for a full engine build. Icon's forged pistons are heat-treated to optimize strength-to-weight ratio, making them ideal for engines producing increased horsepower over stock. The flat-top design works with stock LS cylinder heads to maintain proper compression ratios while supporting power levels well beyond factory specifications.