Yamaha YZ450F Owner's Service Manual page 50

Rebound damping adjusting positions
Minimum
Standard
Maximum
Compression damping adjusting positions
Minimum
Standard
Maximum
Rear suspension
Type
Spring/shock absorber type
Rear shock absorber assembly travel
Spring free length
Spring rate K1
Spring stroke K1
Optional spring available
Enclosed gas/air pressure (STD)
Spring preload adjusting positions
Minimum
Standard
Maximum
Rebound damping adjusting positions
Minimum
Standard
Maximum
Compression damping setting
(for fast compression damping)
Minimum
Standard
Maximum
Compression damping setting
(for slow compression damping)
Minimum
Standard
Maximum
CHASSIS SPECIFICATIONS
20 clicks out*
11 clicks out*
Fully turned in
*With the adjuster fully turned in
20 clicks out*
8 clicks out* (USA) (CAN)
16 clicks out* (EUR) (JPN) (AUS) (NZL) (ZAF)
Fully turned in
*With the adjuster fully turned in
Swingarm (link suspension)
Coil spring/gas-oil damper
132.0 mm (5.20 in)
275.0 mm (10.83 in)
56.00 N/mm (5.71 kgf/mm, 319.76 lbf/in)
0.0–150.0 mm (0.00–5.91 in)
Yes
980 kPa (9.8 kgf/cm
Position in which the spring is turned in 1.5 mm
(0.06 in) from its free length.
Position in which the spring is turned in 10 mm
(0.39 in) from its free length.
Position in which the spring is turned in 18 mm
(0.71 in) from its free length.
30 clicks out*
14 clicks out* (USA) (CAN)
12 clicks out* (EUR) (JPN) (AUS) (NZL) (ZAF)
Fully turned in
*With the adjuster fully turned in
2 turns out*
1-1/4 turns out* (USA) (CAN)
1-3/8 turns out* (EUR) (JPN) (AUS) (NZL)
(ZAF)
Fully turned in
*With the adjuster fully turned in
20 clicks out*
10 clicks out* (USA) (CAN)
12 clicks out* (EUR) (JPN) (AUS) (NZL) (ZAF)
Fully turned in
*With the adjuster fully turned in
2-9
2
, 139.4 psi)