The Modenas KR3 was the first racing motorcycle ever produced by Modenas. It featured a 500cc V3 engine which was different from most 500cc Motorcycle GP which used 4-cylinder engines. The KR3 was built by Modenas for Modenas KR Motorcycle Grand Prix team from 1997 to 2001 before teken over by Proton from 2002 to 2004 with the same machine before the team moved to Proton KR V5 machines.
- Engine Type: 2-stroke, water-cooled V3
- Cylinder: Aluminium, chrome plated
- Piston: Cast aluminium, one piston ring
- Bore x stroke: 59.6 x 59.6 mm
- Displacement: 498 cc
- Inlet system: Crankcase Reed Valve, Keihin carburetors
- Ignition: Programmable ECU, CDI
- Max horsepower: More than 175PS @ 12,200rpm
- Transmission: 6-speed constant mesh, with alternative ratios
- Clutch: Dry multiplate clutch
- Frame Type: Twin-Spar fabricated aluminium
- Front suspension: Inverted-type telescopic Ohlins fork
- Rear suspension: Link type, Ohlins shock
- Front brake: Brembo, Twin carbon discs
- Rear brake: Brembo, single steel disc
- Wheels: 17 inches front & rear
- Wheelbase: 1370 mm
- Weight: 116 kg approx.
