Honda EXP-2

In 1995 Honda re-entered the Paris-Dakar with a bang. The EXP-2 was a radically new and different motorbike, equipped with a revolutionary 400ccm two-stroke engine. After two weeks of racing the african dessert Jean Brucy finished 5th overall and first place in the under-500ccm class.

The EXP-2 was designed to inrease fuel economy, drastically reduce emissions and improve torque characteristics over existing two-strokes. The ARC termed system (Activated Radical Combustion) featured fuel injection and a variable exhaust valve which produced controlled auto-ignition at low to medium throttle settings (at high throttle settings the ignition was controlled by a spark plug). The effect was a thoroughly combustion at low revolutions, whereas in a conventional two-stroke engine unburnt gases would escape into the atmosphere.
A linear and wide powerband was the result, giving the EXP-2 a similar performance to its four-stroke competitors – but a substantially better fuel economy and lower emissions. By increasing the mileage of the bike, it could be raced carrying less fuel, which improved handling and decreased rider fatigue.

1995 Honda EXP-2

Specifications:

  • Type of engine: Water-cooled 2-stroke single cylinder engine (Activated Radical Control Valve)
  • AR (Activated Radical Combustion) PGM-FI
  • Engine displacement: 402 cm³
  • Maximum power: 54PS / 7000rpm
  • Dry weight: 155kg

1992 Honda XR600R BAJA XR680 Scott Summers

1995 Honda EXP-2

1995 Honda EXP-2

1995 Honda EXP-2

1995 Honda EXP-2

1995 Honda EXP-2

1995 Honda EXP-2

1995 Honda EXP-2

1995 Honda EXP-2

1995 Honda EXP-2

Track record of the EXP-2:

  • 1995: Rally Granada-Dakar: 1st place in the >500ccm class, 5th overall
  • 1995: Baja 1000: 1st place in class 30, 7th overall
  • 1995: Nevada Rally: 1st place in the class A3 (2stroke >251ccm), 8th overall

 

The Honda EXP-2 is located on the third floor of the Honda Collection Hall.

More Honda Motocross and Enduro motorcycles at the Honda Collection Hall: http://www.honda-museum.com/motocross-enduro/

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