Rear Shock Absorber
Using the hook wrenches [A], loosen the locknut [B] on
the rear shock absorber.
Special Tool - Hook Wrench R37.5, R42: 57001-1101
Using the stem nut wrench [A], turn the adjusting nut [B]
as required. Turning the adjusting nut downward marks
the spring action harder and upward softer.
Special Tool - Steering Stem Nut Wrench: 57001-1100
Spring Preload Adjustment
(Adjusting nut position at the lower surface [A] from
the center of the mounting hole)
127.5 mm (5.020 in.) (KX450D6F ∼ D7F)
128.5 mm (5.059 in.) (KX450D8F)
121.5 ∼ 138.5 mm (4.783 ∼ 5.453 in.)
122.1 ∼ 131.6 mm (4.807 ∼ 5.181 in.)
Tighten the locknut securely.
After adjusting, move the spring up and down to make
sure that the spring is seated.
Install the parts removed.
Tighten the rear frame mounting bolts.
Torque - Rear Frame Mounting Bolts: 34 N·m (3.5 kgf·m 25
Spring Tension Inspection
Since the spring becomes shorter as it weakens, check
its free length [A] to determine its condition.
If the spring of either rear shock absorber is shorter than
the service limit, it must be replaced. If the length of re-
placement spring and that of the remaining spring vary
greatly, the remaing spring should also be replaced in or-
der to keep the rear shock absorbers balanced of motor-
Shock Absorber Spring Free Length
260 mm (10.2 in.)
255 mm (10.0 in.)