Wiseco 6636M87 Forged Piston 87mm Bore Mitsubishi 4B11-T EVO X

The Wiseco 6636M87 is a shelf-stock forged piston designed for the Mitsubishi 4B11-T turbocharged engine found in the Lancer Evolution X (EVO 10). Wiseco's shelf-stock pistons deliver premium forged performance with faster availability, making them an ideal choice for engine builders looking for a reliable, high-quality piston without extended lead times.

Wiseco forges their pistons from 2618 aluminum alloy, a high-strength material widely chosen for turbocharged and high-performance applications due to its excellent fatigue resistance and ability to withstand elevated heat and cylinder pressures. The 87mm bore diameter makes this piston suitable for standard bore or mild overbore applications on the 4B11-T engine platform.

Key Features:

• Forged 2618 aluminum alloy construction for maximum strength and durability
• 87mm bore diameter — fits standard or lightly bored 4B11-T cylinder bores
• Shelf-stock availability for faster turnaround compared to custom pistons
• CNC-machined to tight tolerances for optimal ring seal and reduced blowby
• Designed for turbocharged and high-boost applications
• Compatible with Mitsubishi 4B11-T engine (Lancer Evolution X / EVO 10)
• Sold individually — verify quantity needed for your build

Wiseco Pistons is a leading American manufacturer of high-performance forged pistons trusted by professional engine builders and motorsport competitors worldwide. The 6636M87 is engineered to meet the demands of high-output 4B11-T builds, offering a direct upgrade path for street performance, track, or competition use.