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Wiseco Professional Series Toyota 4AG 4V Domed +5.9cc Piston Kit - 82mm (1985-1991) K506M82

$773.99

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Wiseco Professional Series Toyota 4AG 4V Domed +5.9cc Piston Kit - 82mm (1985-1991) K506M82

$773.99

$773.99

Fits 1985-1991 Toyota Corolla GTS and MR2 (GT / Super Charged) with 4AG 16V engines.

Engineered for high-output racing and heavy-duty builds, this Wiseco Professional Series piston kit is forged from 2618 aluminum alloy for exceptional tensile strength and heat resistance. These 82mm pistons feature a +5.9cc domed crown design to optimize compression ratios while maintaining the structural integrity required for severe-duty performance applications.

Each piston is treated with Wiseco’s proprietary ArmorGlide skirt coating, which reduces friction and provides seizure resistance for quieter, more efficient operation. Precision-machined ring grooves and forced pin oiling ensure a superior ring seal and consistent lubrication of the wrist pin under high-RPM conditions.

  • Forged 2618 aluminum construction for high-boost or high-compression builds
  • ArmorGlide skirt coating reduces friction and cylinder wear
  • +5.9cc domed crown with fully machined valve reliefs
  • Forced pin oiling for enhanced wrist pin durability
  • Anti-detonation grooves and precision-machined ring lands
  • Kit includes premium rings, wrist pins, and locks
  • Manufacturer Part Number: K506M82
🔧 Fitment & Compatibility
Year Make Model Submodel
1988-1991 Toyota Corolla GTS
1985-1989 Toyota MR2 GT
1988-1989 Toyota MR2 Super Charged

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