Yamaha YZ450FT Owner's Service Manual page 38

Transmission:
Primary reduction system
Primary reduction ratio
Secondary reduction system
Secondary reduction ratio
Transmission type
Operation
Gear ratio: 1st
2nd
3rd
4th
Chassis:
Frame type
Caster angle
Trail
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
Gear
61/23 (2.652)
Chain drive
51/14 (3.643)
Constant mesh, 4-speed
Left foot operation
27/14 (1.929)
25/16 (1.563)
23/18 (1.278)
21/20 (1.050)
Semi double cradle
27.1°
116 mm (4.57 in) (For USA, ZA, AUS, NZ)
117 mm (4.61 in) (For EUROPE except F)
118 mm (4.65 in) (For F, CDN)
With tube
80/100-21 51M (For USA, CDN, ZA, AUS, NZ
and F)
80/100-21 51R (For EUROPE except F)
110/90-19 62M (For USA, CDN, ZA, AUS, NZ
and F)
110/90-19 NHS (For EUROPE except F)
100 kPa (1.0 kgf/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)