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150 Adjustments for Competition
Rear Suspension Adjustments
Low Speed Damping:
The low speed damping can be adjusted by turning
the center screw of the compression damping
adjuster.
The low speed compression damping adjuster has
13 clicks or more.
Turning the adjuster one full turn clockwise
advances the adjuster 4 clicks.
To adjust to the standard position:
1. Turn the adjuster clockwise (harder) until it
will no longer turn (lightly seat). Turn the
adjuster counterclockwise (softer) until it
clicks. This click is position 1.
2. Set the adjuster position 11 clicks (CRF250R)/
8 clicks (CRF250RX) and adjust it until the
punch mark (5) on the adjuster and the punch
mark (4) on the adjuster body are aligned.
Rebound Damping
The rebound damping adjuster (6) is located at the
lower end of the rear shock absorber.
It has 17 clicks or more. Turning the adjuster one
full turn advances the adjuster 6 clicks.
• When adjusting the rebound damping adjuster,
make sure to use the proper size tool to avoid
damage.
• Rebound damping can be increased by turning
the adjuster clockwise.
• Be sure that the rebound damping adjuster is
firmly located in a detent, and not between
positions.
To adjust to the standard position:
1. Turn the adjuster clockwise (harder) until it
will no longer turn (lightly seat). Turn the
adjuster counterclockwise (softer) until it
clicks. This click is position 1.
2. Set the adjuster position 5 to 8 clicks
(CRF250R)/7 to 10 clicks (CRF250RX) and
adjust it until the punch marks (7) on the
adjuster and the rear shock absorber are
aligned.
Setting the proper race sag (ride height) is very
important for competition use.
Race sag refers to the amount of rear wheel travel
used by your CRF at rest, ready to ride, with you
on the seat. As a general rule of thumb, the race sag
dimension should be about one-third of the
maximum travel.
On your CRF, ride height is changed by adjusting
the rear suspension spring pre-load.
Spring Pre-load & Race Sag Adjustment
The following adjustment procedure establishes
the correct starting point for any suspension tuning
— the proper rear suspension spring preload
adjustment for your specific needs.
Your CRF should be at normal racing weight,
including fuel, oil and coolant. You should be
wearing all your normal protective apparel. You
will need two helpers.
To calculate the proper adjustment, it is necessary
to measure between two fixed points — from the
center of the seat mounting bolt to the center of the
chain adjuster lock nut as illustrated here — for
two different situations:
(4) adjuster body punch mark
(5) low speed compression damping adjuster punch
mark
(5)
(4)
(6) rebound damping adjuster (7) punch marks
(6)
(7)
Rear Suspension Race Sag
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