High Performance Kit

• Product Details

  Please double check your selection prior to placing your order, as this item is NOT eligible for return. Please see our full list of return restrictions.

  Performance Kit.

  YZ250F Kit:

  The YZ250F High-Performance Kit conveniently combines GYTR performance parts into one kit to maximize the power of your bike.

  Kit includes:

  • GYTR Cylinder Head.
  • GYTR High Compression Piston.
  • GYTR Air Flow Kit.
  • Pre-programmed Vortex ECU - tuned specifically for this combination of performance accessories.
  • Top End Gasket Kit.
  • Replacement GYTR Ported Head Assembly P/N B7B-E11B0-T0-00.

  YZ125 Kit:

  The GYTR YZ125 Performance Kit is a comprehensive bolt-on engine kit developed to increase power and improve throttle response while maintaining strict Yamaha reliability standards.

  Kit includes:

  • GYTR CNC Ported Cylinder.
  • GYTR Two Piece Head.
  • GYTR Tuned CDI.
  • GYTR High Compression Piston Assembly (two per kit).
  • GYTR Exhaust Valves.
  • GYTR Jetting Kit.
  • V Force Reed Valve System.
  • GYTR Silencer.
  • GYTR Pipe.
  • GYTR Carbon Fiber Ignition Cover.

  Note: Requires 91 octane or higher fuel. Yamaha jetting specification and race fuel is recommended.

  YZ85/YZ85LW Kit:

  • GYTR CNC Ported Cylinder.
  • GYTR Two-Piece Cylinder Head.
  • GYTR Tuned CDI.
  • Two Yamaha Genuine Piston Kits.
  • GYTR Exhaust Valves.
  • GYTR Jetting Kit.
  • VForce Reed Valve System.
  • GYTR Silencer.
  • GYTR Pipe.
  • GYTR Radiator Hose.
  • GYTR Radiator Cap.
  • Iridium Spark Plug.
  • Kit Owner Manual.

  Notes: Requires minimum 91-octane or higher fuel. Yamaha Jetting specification and race fuel is recommended.

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• Fitment

• # Part Numbers

  Product Variant	Manufacturer Part #
  GYTR High Performance Kit	B4X-E9500-V0-00, B0G-E9500-V0-00

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