ICON PISTONS - LS 6.0L/6.2L FT FORGED PISTON SET 4.030 BORE IC9991C.030

ICON FHR Series Pistons for GM LS

ICON FHR Series pistons for GM LS offer premium, custom options in an "off the shelf" option for your LS-family engine. FHR (Formed Head Relief) pistons have valve reliefs that are formed in as the piston blank is pressed into the die, creating a stock, but light forging. Many of the domed models are solid which allows tailoring the dome height for a specific compression ratio. They are constructed from high-strength, forged 4032 aluminum alloy for increased durability while maintaining tighter piston-to-wall clearance for increased cylinder sealing, lower cylinder wear, and stock-like noise levels, making them ideal for street and lightly boosted applications.

ICON FHR pistons for GM LS also feature:

* Mini grooves allow an overheated piston that contacts a cylinder wall to transfer heat to the wall. Friction is also reduced over a solid ring land.
* Accumulator grooves provide a reservoir area for gases that pass by the top ring. Pressure is reduced between top and second ring to help stabilize flutter and maximize ring seal.
* 0.030 in. offset wrist pins
* Round wire locks
* M42 skirt coating

Piston, FHR, Forged, Flat Top, 4.030 in Bore, 1.115 in Compression Height, 1.5 x 1.5 x 3.0 mm Ring Groove, Minus 3.30 cc, GM LS-Series, Set of 8