605-01-108 rev B
Pg. 11
DUAL-SPEED COMPRESSION (DSC) ADJUST
The FOX DSC valve is an option on coil-over shocks and gives the ability to externally adjust the
damping. The DSC has about 24 clicks of low-speed adjustment and about 22 clicks of high-speed
adjustment. The factory setting is 12 / 12. The performance of the shock at this setting is close to
the performance of the non- adjustable shock and is a good all-around setting. The DSC valve gives the
driver the ability to tune the shock for different terrain / personal preference on either side of this setting
(softer or stiffer).
LSC (LOW-SPEED COMPRESSION) ADJUSTMENT
The LSC is adjusted using a flat-blade screwdriver in the middle of the adjuster. More damping = stiffer =
clockwise
LSC primarily affects the compression damping during slow suspension movements such as G-outs
or smooth jump landings. It also affects wheel traction and the ride comfort of the vehicle.
Choose a LSC setting that gives good body control (roll in corners, dive under braking, squat under
acceleration, etc.) without causing excessive harshness or loss of traction.
The graph below shows the typical range of adjustability for the LSC adjuster from full-firm to full-soft
with the HSC adjuster held constant at 10 clicks out.
HSC (HIGH-SPEED COMPRESSION) ADJUSTMENT
The HSC is adjusted using a 17 mm socket More
damping = stiffer = clockwise
The HSC adjuster affects the compression damping during medium-to-fast suspension movements such as
steep jump faces, harsh flat landings and aggressive whoops. The goal is to run as little high-speed
compression damping as possible without bottoming. The graph below shows the typical range of
adjustability for the HSC adjuster from full-firm to full-soft with the LSC adjuster held constant at 10 clicks:
LSC ADJUSTMENT RANGE
HSC ADJUSTMENT RANGE
FOX DSC VALVE PERFORMANCE
Low-Speed Adjuster dialed full soft to full firm
Hi-Speed Adjuster held constant at 10 Clicks
-500
-400
-300
-200
-100
0
0
20
40
60
80
100
120
140
Velocity (in/s)
For
ce
(l
bf
)
FOX DSC VALVE PERFORMANCE
Low-Speed Adjuster held constant at 10 Clicks
Hi-Speed Adjuster dialed full soft to full firm
-600
-500
-400
-300
-200
-100
0
0
20
40
60
80
100
120
140
Velocity (in/s)
For
ce
(l
bf
)
FOX DSC VALVE PERFORMANCE
Low-Speed Adjuster dialed full soft to full firm
Hi-Speed Adjuster held constant at 10 Clicks
FOX DSC VALVE PERFORMANCE
Hi-Speed Adjuster dialed full soft to full firm
Low-Speed Adjuster held constant at 10 Clicks
