Yamaha WR 250 R

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Yamaha
Wrklein.jpg
WR 250 R
WR 250 R
Manufacturer Yamaha
Sales description WR 250 R
Production period from 2007
class motorcycle
Motor data
Displacement  (cm³) 250
Power  (kW / PS ) 22.6 kW (30.7 hp) at 10,000 rpm
Torque  ( N m ) 23.7 Nm at 8,000 rpm
transmission 6 courses
drive Chain
Wheelbase  (mm) 1420
Seat height (cm) 93

The WR 250 R was first presented by Yamaha in Germany at the end of 2007 . After a few years, the WR 250 R should again be offered as an everyday enduro with 250 cm³. After the sale of the Suzuki DR 350 and the Yamaha XT 350 was stopped , a lucrative market had emerged for them.

technology

The technology of the WR 250 R is derived from the Yamaha WR competition models. The WR 250 R is intended to close the gap between the small 125 cm³ and the large 600 cm³ enduro bikes. The aim of the development should be an enduro that, when matched to daily use, has the performance of a competitive machine.

Technical specifications

  • Liquid-cooled 1-cylinder, 4-stroke DOHC engine with four valves and 250 cm³ displacement
  • Large, lightweight titanium intake valves
  • Large stroke camshafts with extra hard WPC surface treatment
  • Bore × stroke 77.0 mm × 53.6 mm (as with the YZ / WR 250 F)
  • High compression of 11.8: 1
  • Max. Rated power 22.6 kW (30.7 PS) at 10,000 rpm
  • Max. Torque 23.7 Nm at 8,000 rpm
  • Wet sump lubrication
  • Oil content 1.5 L
  • Roof-shaped combustion chamber
  • Electric start (no kick starter)
  • Electronic fuel injection from MIKUNI with a long injection valve with 12 injection nozzles
  • Throttle valve size 38 mm
  • Inlet system based on the downdraft principle with air volume flap on the airbox
  • Light, forged piston
  • Cylinder liner with ceramic composite coating
  • Compact and lightweight 12V rare earth alternator 350 W
  • Coupling with 13 discs
  • 6-speed gearbox with spray nozzle lubrication system
  • EXUP exhaust and compact three-stage silencer
  • Secondary air system and catalytic converter with lambda control
  • 3-part semi- double loop frame
  • Frame made of cast and forged aluminum and tubular steel
  • Light aluminum swing arm with asymmetrical cross-section
  • 46 mm upside-down telescopic fork, suspension travel 270 mm, fully adjustable
  • Suspension strut with deflection system, suspension travel 270 mm, fully adjustable
  • Upright sitting position
  • 930 mm seat height
  • Ground clearance 300 mm
  • Digital instrumentation with multifunction display
  • Brake discs front 250 mm Ø and rear 230 mm Ø Wave
  • Taillight LED
  • Front tire size 80 / 100-21 M / C (51P) & rim size 21x1.60
  • Rear tire size 120 / 80-18 M / C (65P) & rim size 18x2.15
  • Length 2180 mm
  • Width 810 mm
  • Height 1230 mm
  • Seat height 930 mm
  • Wheelbase 1420 mm
  • Ground clearance 300 mm
  • Weight - ready to drive, with a full tank of 134 kg
  • permissible total weight 319 kg
  • permissible axle load at the front 189 kg, at the rear 257 kg
  • Seats 2
  • Top speed: 130 km / h

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