Yamaha YXR7FD Owner's Manual page 182

Secondary reduction system:
Shaft drive
Secondary reduction ratio:
41/21 × 17/12 × 33/9 (10.142)
Transmission type:
V-belt automatic
Operation:
Right hand operation
Reverse gear:
23/14 × 28/23 (2.000)
Low range:
31/16 (1.938)
High range:
31/21 (1.476)
Chassis:
Frame type:
Steel tube frame
Caster angle:
5.0 °
Trail:
26.0 mm (1.02 in)
Front tire:
Type:
Tubeless
Size:
25 x 8-12NHS
Manufacturer/model:
MAXXIS/M951Y
Rear tire:
Type:
Tubeless
Size:
25 x 10-12NHS
Manufacturer/model:
MAXXIS/M952Y
Loading:
Maximum loading limit:
YXR7FD 367.0 kg (809 lb)
YXR7FSPD 359.0 kg (791 lb)
YXR700FAD 367.0 kg (809 lb)
(Total weight of rider, passenger, cargo, accessories, and
tongue)
Tire air pressure (measured on cold tires):
Recommended:
Front:
70.0 kPa (0.700 kgf/cm², 10 psi)
Rear:
98.0 kPa (0.980 kgf/cm², 14 psi)
Minimum:
Front:
63.0 kPa (0.630 kgf/cm², 9 psi)
Rear:
91.0 kPa (0.910 kgf/cm², 13 psi)
Front wheel:
Wheel type:
YXR7FD Panel wheel
YXR7FSPD Cast wheel
YXR700FAD Panel wheel
Rim size:
12 × 6.0AT
10-3