The QA1 Motorsport shock absorber is the latest release from QA1
Precision Products, a quality components manufacturer in the US. In addition to shock
absorbers, they produce in excess of 1.5 million rod ends, for racing use, per year. So
they have the capability to manufacture to very tight tolerances, and very high quality.
QA1 is a proven supplier of speedway shocks and street rod shocks in the US. Other
perhaps better known brands in America are Carrera, Proshock and Afco. But these other
brands are not readily adaptable for road racing in Australia.
In Australian road racing, we need a range of "rebuildable" shocks, where the
valving can easily be changed. With QA1, we can custom build a baseline shock, and then as
the race car is developed, modify compression and rebound "force vs velocity"
curves, to look for extra performance. Note that these shocks do not have any
external adjustment. It is not possible to buy a good racing adjustable shock for
under $A800, let alone the $A400 a QA1 shock can cost.
This new shock is a twin tube design incorporating a gas cell. There is no gas
pressure on the piston rod, so that ride height will not be affected when the shock is
fitted. The shock comes with either spherical bearings, or standard type road car
(stock) mountings. The part numbers as received by us are for speedway applications
in the US.
We can build the shocks here in Australia with any stroke and any type of mounts, as
required to suit most racing applications. The baseline shock valving is tailored to your
specific car. Then, as the car is developed, the valving can changed very economically, by
changing the deflective disc stacks.
The shocks are also available with aluminium bodies, and adjustable height coil overs.
The coil over type can be used to replace old style Armstrong single adjustables in
historic racing (they can come with single adjustable knob). Or, even to replace a
front suspension coil spring on A-arm suspension sedans and sports cars, while still
retaining standard upper and lower suspension arms.
Initial cost is less than $A400 each, (incl. mountings, custom valving and dyno sheet.)
for steel body stock mount shocks.
Re-build and re-valving: $A75 (including deflective discs for changing the valving and
dyno sheet. Any replacement parts required are extra.)