Yamaha YZ125X 2023, Owner'S Manual, Page: 138 / 146

CHASSIS
8-13
[Unequal-pitch steel spring]
TIP
• The unequal-pitch spring is softer in initial char-
acteristic than the equal-pitch spring and is dif-
ficult to bottom out under full compression.
•
The I.D. mark “a” is marked at the end of the
spring.
•
Spring specification varies according to the
color and quantity of I.D. marks.
• Spring preload adjusting positions
TIP
For the spring preload adjustment, refer to “AD-
JUSTING THE REAR SHOCK ABSORBER AS-
SEMBLY” on page 3-20.
Type
Spring
rate
(N/mm)
Part number
I.D.
mark/Q’ty
SOFT 44
5UN-22212-A0
(Silver)
Green/2
46
5UN-22212-B0
(Silver)
Red/2
48
5UN-22212-C0
(Silver)
Black/2
50
5UN-22212-D0
(Silver)
Blue/2
52
5UN-22212-E0
(Silver)
Yellow/2
54
5UN-22212-F0
(Silver)
Pink/2
STIFF 56
5UN-22212-G0
(Silver)
White/2
Spring preload adjusting positions
Minimum
Position in which the spring is
turned in 1.5 mm (0.06 in) from
its free length.
Standard
Position in which the spring is
turned in 4.0 mm (0.16 in) from
its free length.
Maximum
Position in which the spring is
turned in 18.5 mm (0.73 in) from
its free length.