If they show any damage, replace it.

Caliper Fluid Seal Damage
Caliper Piston and Cylinder DamageSteering Damper Installation
Install the following parts as shown in the figure.
Collar [A]
Washer (t = 3.5 mm, 0.14 in.) [B]
Steering Damper [C] (
ZX1000JC/KC)
Electronic Steering Damper [D] (ZX1000JD/KD)
Washer (t = 1.2 mm, 0.05 in.) [E]
Apply a non-permanent locking agent to the threads of
the steering ...
Timing Rotor Installation
Install the timing rotor [A] on the crankshaft [B] with their
teeth [C] aligned.
Holding the timing rotor with the flywheel & pulley holder
and tighten the bolt.
Torque - Timing Rotor Bolt: 39 N·m (4.0 kgf·m, 29 ft·lb)
Special Tool - Flywheel & Pulley Holder: 57001-1605
I ...
Exploded View
13. Front Wheel Rotation Sensor
B: Apply brake fluid.
L: Apply a non-permanent locking agent.
R: Replacement Parts
S: Follow the specified tightening sequence.
Si: Apply silicone grease (ex. PBC grease).
10. Rear Wheel Rotation Sensor
B: Apply brake fluid.
G: Apply gr ...