Wiseco K636M86 Forged 86 mm Pistons for 2008-2015 Mitsubishi Lancer Evo X

Vehicle Fitment

• 2008-2015 Mitsubishi Lancer Evolution X (4B11T, 2.0 L DOHC Turbo)

Features

• Forged from 2618 aerospace-grade aluminum for high strength
• ArmorGlide® skirt coating to reduce friction and scuffing
• Strutted forging enhances rigidity and durability at high RPM
• Dish volume of -4.5 cc for lower compression tuning
• Offset wrist pin for smoother operation
• Includes pre-gapped ring pack (Plasma Moly / Napier) for reliable sealing
• Lightweight design optimized for sport-compact and race builds
• Designed for heavy-duty or high-boost applications

Specifications

• Bore diameter: **86.00 mm**
• Compression height: **33.25 mm**
• Dish volume: **-4.5 cc**
• Compression ratio: ~**9.0 : 1** (or ~9.2:1 depending on ring set)
• Wrist pin diameter: **23 mm**
• Piston material: 2618 forged aluminum alloy
• Recommended ring set: 8600XX (or compatible)
• Rod length in typical application: **143.75 mm**

Included Components

• 4x forged pistons
• 4x wrist pins
• Ring set (pre-gapped, plasma moly / Napier, depending on series)
• Retaining clips / locks

Product Description

The **Wiseco K636M86** forged piston set is built for the Mitsubishi Lancer Evolution X's 4B11T engine, especially in high-performance or forced-induction builds. With a bore size of 86 mm and a compression height of 33.25 mm, these pistons are precisely engineered to deliver strength and reliability under severe-duty conditions.

Constructed from 2618 aerospace-grade aluminum, the pistons offer excellent fatigue resistance. Their ArmorGlide®-coated skirts help minimize friction and wear, which is critical in high-RPM or boosted setups. The strutted forging improves stiffness, while the -4.5 cc dish volume lowers compression, making these pistons ideal for turbocharging or aggressive tuning.

The set includes matching wrist pins, retaining clips, and a premium ring pack to ensure proper sealing and durability. Whether you're building a race motor or upgrading for reliability, the K636M86 delivers performance with confidence. Proper machining and ring gap setup are recommended during assembly to optimize longevity and performance.