Yamaha 2003 YFZ450S, Service Manual

Page: 35 / 375

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SPEC
CHASSIS SPECIFICATIONS
EBS01003
CHASSIS SPECIFICATIONS
Item Standard Limit
Steering system
Steering bearing type Ball and race bearing ----
Front suspension
Shock absorber travel 110 mm (4.33 in) ----
Fork spring free length 265 mm (10.43 in) ----
Spring fitting length 255 mm (10.04 in) ----
Spring rate (K1) 19.6 N/mm (2.00 kg/mm, 112 lb/in) ----
Spring rate (K2) 39.2 N/mm (4.00 kg/mm, 224 lb/in) ----
Optional spring No ----
Rear suspension
Shock absorber travel 116.0 (4.57 in) ----
Spring free length 259 mm (10.20 in) ----
Spring fitting length 244 mm (9.61 in) ----
Spring rate (K1) 46.0 N/mm (4.69 kg/mm, 263 lb/in) ----
Stroke (K1) 0 ~ 116.0 mm (0 ~ 4.57 in) ----
Optional spring No ----
Swingarm
Free play limit end ---- 1 mm
(0.04 in)
side ---- 1 mm
(0.04 in)
Front wheel
Type Panel wheel ----
Rim size 10
×
5.5 AT ----
Rim material Aluminum ----
Rim runout limit radial ---- 2.0 mm
(0.08 in)
lateral ---- 2.0 mm
(0.08 in)
Rear wheel
Type Panel wheel ----
Rim size 9
×
8.5 AT ----
Rim material Aluminum ----
Rim runout limit radial ---- 2.0 mm
(0.08 in)
lateral ---- 2.0 mm
(0.08 in)
Drive chain
Type/manufacturer 520MXV/DAIDO ----
Link quantity 96 ----
Drive chain slack 25 ~ 35 mm (0.98 ~ 1.38 in) ----