Wiseco K672M815 Honda R18 Turbo Forged Piston Kit 81.5mm Bore -10cc

The Wiseco K672M815 is a high-performance forged piston kit engineered specifically for the Honda R18 engine in forced induction (turbocharged) applications. Featuring an 81.5mm bore diameter and a -10cc dish for reduced compression, these pistons are built to handle the elevated cylinder pressures and heat loads associated with turbocharged builds.

Key Features:

• Bore Diameter: 81.5mm — a slight overbore over the stock 81.0mm R18 bore
• Dish Volume: -10cc — lowers effective compression ratio, ideal for high-boost turbo applications
• Compression Height: 1.132 inches — precision-machined for proper deck clearance
• Forged Construction: CNC-machined from 2618 alloy forging for superior strength and fatigue resistance versus cast OEM pistons
• ArmorGlide Skirt Coating: Wiseco's proprietary skirt coating reduces friction and improves break-in
• ArmorPlating Top Ring Groove: Hard-anodized top ring land for enhanced wear resistance under boost
• Designed for Forced Induction: Piston geometry and material spec optimized for turbocharged Honda R18 builds

Wiseco forged pistons are a go-to upgrade for engine builders preparing the Honda R18 platform for turbocharger use, providing the durability and dimensional precision needed for reliable high-power operation.