Wiseco KE198M825AP Forged Piston Kit VW MkII 1.8L 8V 82.5mm Bore 8:1 CR

The Wiseco KE198M825AP is a forged performance piston kit engineered for the Volkswagen MkII 1.8L 8-valve engine, including the supercharged G60 (PG engine code) platform. Featuring an 82.5mm bore diameter (+0.060" oversize) and an 8.0:1 compression ratio, this kit is purpose-built for forced-induction builds where a lower compression ratio is essential for reliable power under boost.

Key Features:

• Forged aluminum construction — produced from dedicated in-house forgings for superior strength-to-weight ratio versus cast OEM pistons
• ArmorGlide® skirt coating — dry film lubricant applied to the piston skirt to reduce friction, minimize noise, and free up horsepower
• 8.0:1 compression ratio — low CR design optimized for supercharged and turbocharged applications
• 82.5mm bore (+0.060" over) — precision oversize for use with bored/honed cylinders
• 20mm wrist pin — high-strength chromium alloy steel pin included
• Matched ring set included — compatible replacement rings: 8250XX series
• Optimized valve pockets and crown geometry — engineered specifically for the 8-valve head design
• Engineered, forged, and machined in the USA — manufactured at Wiseco's Mentor, Ohio facility

Wiseco's Sport Compact piston line draws on over 80 years of racing heritage to deliver forged pistons that outperform OEM and cast aftermarket alternatives in both durability and dimensional consistency. The KE198M825AP is an ideal foundation for a boosted MkII engine rebuild demanding tighter tolerances and greater thermal resilience.