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The Tomei Forged Piston Set 4B11 Evo X 86.5 CH27.4 (TA202A-MT02B) is built for Evo X owners pushing higher boost and power where OEM pistons become a liability. Tomei’s forged design improves strength under high heat and cylinder pressure while supporting the kind of tuning and sustained load that track-driven or big-turbo cars demand.

This is a solid internal upgrade path for anyone building a stronger bottom end before increasing boost, RPM, or turbo size.

Key Features

  • Application: Mitsubishi 4B11 (Evo X)
  • Bore: 86.5mm
  • Compression height: 27.4mm (2.3)
  • Piston material: A4032
  • Designed for boosted performance and high thermal load
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Tomei

Tomei is a renowned Japanese brand specializing in high-performance automotive parts and tuning solutions. Known for their precision engineering and exceptional craftsmanship, Tomei offers a wide range of products, including exhaust systems, turbochargers, camshafts, and engine components. Designed for enthusiasts and professionals, Tomei products deliver enhanced power, reliability, and performance, making them a trusted name in motorsports and street tuning worldwide.

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