Yamaha WR450FB 2012 Owner's Service Manual page 55

Rear brake
Type
Operation
Rear disc brake
Disc outside diameter x thickness
Brake disc thickness limit
Brake disc deflection limit
Brake pad lining thickness (inner)
Limit
Brake pad lining thickness (outer)
Limit
Master cylinder inside diameter
Caliper cylinder inside diameter
Recommended fluid
Steering
Steering bearing type
Center to lock angle (left)
Center to lock angle (right)
Front suspension
Type
Spring/shock absorber type
Front fork travel
Fork spring free length
Limit
Installed length
Spring rate K1
Spring stroke K1
Inner tube outer diameter
Inner tube bending limit
Optional spring available
Recommended oil
Standard oil amount
Rebound damping
*With the adjusting screw fully turned in
Minimum
Standard
Maximum (hard)
Compression damping
*With the adjusting screw fully turned in
Minimum
Standard
Maximum (hard)
Rear suspension
Type
Spring/shock absorber type
Rear shock absorber assembly travel
Spring free length
Installed length
Spring rate K1
Spring stroke K1
Optional spring available
Enclosed gas/air pressure (STD)
2-9
CHASSIS SPECIFICATIONS
Single disc brake
Right foot operation
245.0 x 4.0 mm (9.65 x 0.16 in)
3.5 mm (0.14 in)
0.15 mm (0.0059 in)
6.4 mm (0.25 in)
1.0 mm (0.04 in)
6.4 mm (0.25 in)
1.0 mm (0.04 in)
11.0 mm (0.43 in)
25.40 mm x 1 (1.00 in x 1)
DOT4
Taper roller bearing
43.0
°
43.0
°
Telescopic fork
Coil spring/oil damper
300.0 mm (11.81 in)
454.0 mm (17.87 in)
449.0 mm {17.68 in)
454.0 mm (17.87 in)
4.50 N/mm (0.46 kgf/mm, 25. 70 lb/in)
0.0-300.0 mm (0.00-11.81 in)
48.0 mm (1.89 in)
0.2 mm (0.01 in)
Yes
Suspension oil S 1
528 cm
3
(17.85 Imp.oz, 18.62 US oz)
20 click ( s) out*
12 click (s) out*
Fully turned in
20 click ( s) out*
14 click (s) out*
Fully turned in
Swingarm (link suspension)
Coil spring/gas-oil damper
122.0 mm (4.80 in)
240.0 mm {9.45 in)
222.0 mm (8.47 in)
54.00 N/mm (5.51 kgf/mm, 308.34 lb/in)
0.0-140.0 mm (0.00-5.51 in)
Yes
1000 kPa (10.0 kgf/cm2, 142.2 psi)