ICON Forged Piston and Ring Sets have many of the features high-dollar custom pistons have – except the price tag. You get top-quality forged aluminum pistons, a complete ring set, wrist pins, and spiral locks.
Premium Forged Piston and Ring Kits
ICON Premium Piston and Ring Sets feature pistons made from 2618 billet aluminium alloy with lower silicon content, which makes them better suited for engine combinations with high compression or a power adder. The ring packs have a plasma-moly coated ductile iron or cast iron top ring depending on application.
Other features include:
• Fully CNC-machined valve reliefs and crowns
• Polished piston crowns help maximize combustion efficiency
• Diamond finished skirts
• Second land accumulator groove
• Dual forced pin oiling on most applications
• Lateral gas porting on higher compression ratios
Summit Racing also carries ICON Premium Piston and Ring Sets with anodized crowns and top ring grooves. The anodising focuses the heat in the piston crown to improve combustion efficiency and limits top ring micro-welding to the groove under severe operating conditions.
FHR Series Piston and Ring Kits
FHR Series Pistons are forged from low expansion 4032 aluminium alloy to maintain tighter piston-to-wall clearances. That means better cylinder sealing, lower cylinder wear, and OEM noise levels. All sets are weight-matched to within +/- 2 grams for vibration-free operation.
FHR stands for Formed Head Relief, a process where the valve reliefs are formed as the piston blank is pressed into the die, creating a strong, light forging.
Other features include:
• Precision forged crowns with oversized pockets for larger valves found in aftermarket heads
• Low-friction, high-adhesion molybdenum skirt coating reduces dry startup scuffing
• Ring grooves, ring lands, and skirt profiles diamond machined to very tight tolerances
• Accumulator grooves reduce gas pressure to help stabilize the top ring and maximise ring seal
• .030-inch offset wrist pins reduce piston ‘slap’
Elite Forged Piston and Ring Kits
Forged from 2618 aluminium, ICON Elite Series pistons are designed for all-out race engines. The pistons have ICON’s Line2Line adaptive skirt coating. The coating hones itself on the cylinder walls to maintain proper oil wedge for a perfect fit. That reduces piston rock and shock loads while improving ring seal.
Other features include:
• CNC-machined valve reliefs and crown
• Diamond CNC-turned skirts
• Anodized top ring groove to greatly reduce micro-welding
• Anodized piston crown to improve combustion efficiency
• Second land accumulator groove
• Dual forced pin oiling on most applications
• Lateral gas porting on high-compression pistons