Yamaha YZ450FX 2021 Owner's Service Manual page 130

Disassembling the front brake master cylinder
Order Job/Parts to remove
1 Push rod
2 Dust boot
3 Circlip
4 Washer
5 Brake master cylinder kit
1
S
2
3 New
5
New
BF
4-16
4
Q'ty
1
1
1
1
1
FRONT BRAKE
Remarks