Yamaha WR25RB Owner's Manual page 98

SPECIFICATIONS
Operation:
Left foot operation
Gear ratio:
1st:
1
2.642 (37/14)
2nd:
1.813 (29/16)
2
3rd:
1.318 (29/22)
3 4th:
1.040 (26/25)
5th:
4
0.889 (24/27)
6th:
0.786 (22/28)
5
Chassis:
Frame type:
Semi double cradle
6
Caster angle:
26.67 
Trail:
7
111 mm (4.4 in)
Front tire:
8 Type:
With tube
Size:
9
80/100-21M/C 51P
Manufacturer/model:
BRIDGESTONE/TW-301 F
Rear tire:
Type:
With tube
Size:
120/80-18M/C 62P
Manufacturer/model:
BRIDGESTONE/TW-302 F
Loading:
Maximum load:
184 kg (406 lb) (CAL)
185 kg (408 lb) (U49)
* (Total weight of rider, passenger, cargo
and accessories)
Tire air pressure (measured on cold
tires):
Loading condition:
0–90 kg (0–198 lb)
Front:
2
125 kPa (1.25 kgf/cm , 18 psi)
Rear:
2
175 kPa (1.75 kgf/cm , 25 psi)
Loading condition:
90–184 kg (198–406 lb) (CAL)
90–185 kg (198–408 lb) (U49)
Front:
2
150 kPa (1.50 kgf/cm , 22 psi)
Rear:
2
200 kPa (2.00 kgf/cm , 29 psi)
Front wheel:
Wheel type:
Spoke wheel
Rim size:
21x1.60
Rear wheel:
Wheel type:
Spoke wheel
Rim size:
18x2.15
9-2
Front brake:
Type:
Single disc brake
Operation:
Right hand operation
Specified brake fluid:
DOT 4
Rear brake:
Type:
Single disc brake
Operation:
Right foot operation
Specified brake fluid:
DOT 4
Front suspension:
Type:
Telescopic fork
Spring/shock absorber type:
Coil spring/oil damper
Wheel travel:
270.0 mm (10.63 in)
Rear suspension:
Type:
Swingarm (link suspension)
Spring/shock absorber type:
Coil spring/gas-oil damper
Wheel travel:
270.0 mm (10.63 in)
Electrical system:
Ignition system:
TCI
Charging system:
AC magneto