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KT100 is a 100 cc two-stroke cycle kart engine made by Yamaha.

The KT100 is a simple and rugged air cooled engine that uses piston-port intake induction with a Walbro WB-3A carburetor. The KT100 is a popular high-performance 2-stroke kart racing engine. It comes in various forms used in many countries. The KT100J is slightly smaller with less additions which can be made to the engine in comparison to its bigger brother, the KT100SD.

The KT100 is a very versatile engine using different exhaust systems and carburetors through a large range of classes. The KT100 can be blueprinted for most series and organizations with maximum and minimum rules.

Yamaha KT100J Specifications

  • Bore: 50 mm
  • Stroke: 50 mm.
  • Horsepower: 9
  • Weight: 10 kg (inc. exhaust header)

Yamaha KT100S Specifications

  • Bore: 52 mm
  • Stroke: 46 mm.
  • Horsepower: 15
  • Weight: 11 kg (inc. exhaust header)

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