Yamaha WR450F(T), Owner'S Service Manual, Page: 88 / 758

SPEC
2 - 13
EC212201
CHASSIS
Item Standard Limit
Steering system:
Steering bearing type Taper roller bearing ----
Front suspension: USA, CDN EUROPE AUS, NZ, ZA
Front fork travel 300 mm (11.8 in)
← ←
Fork spring free length 460 mm (18.1 in)
← ←
Spring rate, STD K = 4.5 N/mm
(0.459 kg/mm,
25.7 lb/in) K = 4.2 N/mm
(0.428 kg/mm,
24.0 lb/in) K = 4.4 N/mm
(0.449 kg/mm,
25.1 lb/in)
Optional spring/spacer Yes
← ←
Oil capacity 718 cm
3
(25.3 Imp oz,
24.3 US oz)
715 cm
3
(25.2 Imp oz,
24.2 US oz)
←
Oil level 128 mm (5.04 in) 130 mm (5.12 in)
←
<Min.~Max.>
(From top of outer tube with inner
tube and damper rod fully com-
pressed without spring.) 80 ~ 150 mm
(3.15 ~ 5.91 in)
← ←
Oil grade Suspension oil
“S1”
← ←
Inner tube outer diameter 48 mm (1.89 in)
← ←
Front fork top end Zero mm (Zero in)
← ←
Rear suspension: USA, CDN EUROPE AUS, NZ, ZA
Shock absorber travel 129 mm (5.08 in)
← ←
Spring free length 260 mm (10.24 in)
← ←
Fitting length 248 mm (9.76 in) 253 mm (9.96 in) 247 mm (9.72 in)
<Min.~Max.> 237.5 ~ 258.5 mm
(9.35 ~ 10.18 in)
← ←
Spring rate, STD K = 52.0 N/mm
(5.30 kg/mm,
296.8 lb/in) K = 48.0 N/mm
(4.90 kg/mm,
274.4 lb/in) K = 54.0 N/mm
(5.50 kg/mm,
308.0 lb/in)
Optional spring Yes
← ←
Enclosed gas pressure 1,000 kPa
(10 kg/cm
2
, 142 psi)
← ←
Swingarm:
Swingarm free play limit
End ---- 1.0 mm
(0.04 in)
MAINTENANCE SPECIFICATIONS