Yamaha WR426F(N) Owner's Service Manual page 76

Tire:
Type
Size (front)
Size (rear)
Tire pressure (front and rear)
Brake:
Front brake type
Operation
Rear brake type
Operation
Suspension:
Front suspension
Rear suspension
Shock absorber:
Front shock absorber
Rear shock absorber
Wheel travel:
Front wheel travel
Rear wheel travel
Electrical:
Ignition system
GENERAL SPECIFICATIONS (WR426F)
With tube
80/100-21 51M (USA, CDN, ZA)
90/90-21 54R (EUROPE, AUS, NZ)
110/100-18 64M (USA, CDN, ZA)
130/90-18 69R (EUROPE, AUS, NZ)
100 kPa (1.0 kg/cm
Single disc brake
Right hand operation
Single disc brake
Right foot operation
Telescopic fork
Swingarm (link type monocross suspension)
Coil spring/oil damper
Coil spring/gas, oil damper
300 mm (11.8 in)
315 mm (12.4 in)
CDI magneto
2 - 3
SPEC
2
, 15 psi)