Yamaha YFZ450RF Owner's Manual page 147

Operation:
Left foot operation
Gear ratio:
1st:
35/14 (2.500)
2nd:
30/15 (2.000)
3rd:
31/19 (1.632)
4th:
28/21 (1.333)
5th:
23/21 (1.095)
Chassis:
Frame type:
Aluminum die-cast and steel tube frame
Caster angle:
5.0 °
Trail:
21.0 mm (0.83 in)
Front tire:
Type:
Tubeless
Size:
AT21 x 7R10
Manufacturer/model:
MAXXIS/MS21
Rear tire:
Type:
Tubeless
Size:
AT20 x 10R9
Manufacturer/model:
MAXXIS/MS22
Loading:
Maximum loading limit:
100.0 kg (220 lb)
(Total weight of rider, cargo, accessories, and tongue)
Tire air pressure (measured on cold tires):
Recommended:
Front:
35.0 kPa (0.350 kgf/cm², 5.0 psi)
Rear:
35.0 kPa (0.350 kgf/cm², 5.0 psi)
Minimum:
Front:
32.0 kPa (0.320 kgf/cm², 4.6 psi)
Rear:
32.0 kPa (0.320 kgf/cm², 4.6 psi)
Front wheel:
Wheel type:
Panel wheel
Rim size:
10 x 5.5AT
Rear wheel:
Wheel type:
Panel wheel
Rim size:
9 x 8.0AT
Front brake:
Type:
Disc brake
10-3
10