QA1 MOD Series User manual
9919-237 Rev. 10092018
QA1 MOD™ Series Shock Tuning Valve Packs
QuickTune™ Technology Modular Valve Packs
QA1’s modular valve packs change the shock force range. There are multiple valve pack options to achieve the
damping range for your application. The valve packs are identified by a laser-engraved 3-digit code on the side
of the valve pack.
Changing the QuickTune™ Technology Modular Valve Packs
1. To change the valve pack, first turn the high-speed adjuster knob all the way counterclockwise to full soft,
then remove the five (5) cap screws using the supplied 3/32” hex. Do not loosen the set screw located on
the side of the valve pack, as this is for the detent mechanism. Pull out the valve pack to remove it.
2. Select desired valve pack and insert it into the shock base. Note that the shock base has a “C” for
compression and “R” for rebound machined into its sides. The valve pack knobs are also marked “C” and
“R”. Make sure the valve pack is installed in the correct side so that the knob marking and the body marking
match. The valve pack must be oriented to line up with the opening in the body.
3. Reinstall the five (5) cap screws and torque them to 5 in-lbs.
The following pages show dyno graphs for available valve packs. For tuning recommendations, see the MOD™
Series Installation and Quick Tuning Guide that came with the shocks or find it on www.QA1.net.
Set Screw
(1 on side of each knob)
Do not adjust
Cap Screws
(5 per knob)
2
9919-237 Rev. 10292018
Dyno graph shows every two clicks on the high-speed adjusters from full soft to full stiff and
the low-speed adjusters on full stiff. Standard valve packs (400) shown.
Standard valve pack (400) Peak Velocity Curve
3
9919-237 Rev. 10292018
Dyno graph shows every two clicks on the high-speed adjusters from full soft to full stiff and
the low-speed adjusters on full stiff. Firm valve packs (402) shown.
Firm valve pack (402) Peak Velocity Curve
4
9919-237 Rev. 10292018
Dyno graph shows every two clicks on the high-speed adjusters from full soft to full stiff and
the low-speed adjusters on full stiff. Soft valve packs (401) shown.
Soft valve pack (401) Peak Velocity Curve
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