Wiseco Pistons K674M855AP Mitsubishi 4G63 7-Bolt Piston Set 8.5:1 -12cc Dish

The Wiseco K674M855AP forged piston set is engineered specifically for Mitsubishi 4G63 7-bolt engines, delivering a precise 8.5:1 compression ratio with a -12cc dish design. These pistons are ideal for turbocharged applications where controlled compression is essential for safe boost levels and reliable performance.

Key Features:

• Application-specific design for 4G63 7-bolt block configuration
• 8.5:1 compression ratio optimized for forced induction
• -12cc dish dome design for precise combustion chamber volume
• 85.5mm bore diameter (standard size)
• Forged from aerospace-quality 2618 aluminum alloy for maximum strength
• ArmorGlide skirt coating reduces friction and wear during break-in
• Fully machined crown and ring grooves for precise tolerances
• Complete piston set includes rings, pins, and locks

Wiseco pistons are precision-manufactured in the USA using advanced forging processes that create a dense grain structure for superior durability under high cylinder pressures. The dish design lowers the compression ratio compared to flat-top pistons, making this set well-suited for engines running significant boost pressure. Each piston is CNC-machined to exacting specifications and includes premium piston rings, wrist pins, and circlips for a complete installation.