Wiseco KE163M865AP Forged Piston Kit Opel Vauxhall C20XE 86.5mm 12.5:1

The Wiseco KE163M865AP is a forged performance piston kit designed specifically for the Opel/Vauxhall C20XE 2.0L 16-valve engine ("Red Top"). Engineered for high-performance and motorsport applications, this piston features a 86.5mm bore diameter, a 5.2cc dome, and delivers a 12.5:1 compression ratio to maximize power output from this popular European inline-4.

Key Features:

• 86.5mm bore diameter — precision-sized for performance overbuilds
• 12.5:1 compression ratio — optimized for naturally aspirated high-performance builds
• 5.2cc dome volume — contributes to elevated compression
• 4-valve per cylinder (4VP) piston crown design — shaped to match the C20XE's 4-valve combustion chamber geometry
• Wiseco forged construction — manufactured from high-strength forged aluminum alloy for superior strength-to-weight ratio and heat resistance
• ArmorGlide skirt coating — reduces friction and improves break-in characteristics (standard on Wiseco forged pistons)
• Designed for the Opel/Vauxhall C20XE (Lotus, Calibra, Astra, and Cavalier applications)

Wiseco pistons are made in the USA and are a trusted choice among professional engine builders and motorsport teams worldwide. The KE163M865AP is ideal for track day, club racing, and full competition builds seeking maximum compression and reliability from the C20XE platform.