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Suspension > Shocks > Shock Absorber Services
Shock Absorber Services Performance
suspension damping

Shock Services - Our
in-house shock services provide everything you need to upgrade,
test, modify and renew your shocks. Send your shocks in for
service, or have added services performed on your newly purchased
shocks.
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Dyno testing - Are
your shocks functioning properly? How well do your shock pairs
match? Are they valved properly for your springs?
Without a shock dyno test, you can't answer any of these questions.
If you're serious about performance, you need a dyno test for your shocks. Without it you are
literally driving blind to the
performance (and problems) of your shocks.
Even new commercial shocks can be plagued with problems.
We find approximately 20% of new, off-the-shelf shocks show erratic
performance or un-acceptable performance deviation. If you buy
new Bilsteins from us and have them dyno tested at purchase, we will
replace them if they fail our tests. Podium shocks
already include dyno testing.
Most problem shocks show no external indications, and are not
obvious when driving. Failed or
poorly matched shocks cause hard to diagnose handling problems.
If your car doesn't feel planted, confidence inspiring, and "right"
- despite seemingly good suspension and setup, the problem may be
your shocks. Our shock dyno test will expose any problems.
Do you have adjustable shocks? Dyno testing is a must
for building a table to map adjuster positions between shock pairs.
Hint - adjuster positions never match.
We use a sophisticated computer controlled Roehrig shock dyno.
Dyno test results include a temperature-stabilized force/velocity plot, gas pressure
measurement, and seal drag measurement. This is absolutely
instrumental for ensuring proper shock operation and diagnosing shock problems.
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Sophisticated computer
controlled shock dyno
testing capabilities
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Pair-Matching - This is a
performance secret that separates fast cars from the mid-pack.
High-dollar race teams use custom built shocks, then tune or hand
select them to ensure mated pairs perform the same.
Even the best mass-produced shocks have manufacturing tolerance
yielding performance variation of up to +/-15%. That means two
randomly selected, brand new, tested good, "identical" shocks could
have damping forces mismatched by 30%. Lesser brands are even
worse.
Our
Pair-matching service involves dyno testing a batch of identically
valved shocks,
then hand selecting pairs that have similar performance. We
assign serial numbers to track the pair and include the dyno plots
with the shocks.
Pair-matching is absolutely critical for top performance.
Pair-matching is standard on all Podium shocks, and optional on most
Bilstein shocks when purchased new from us. We can also pair-match custom valved shocks.
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Dyno
Plot - performance variation of 9 identical shocks |
Maintenance / Rebuilding -
Shocks are wear-items that need periodic maintenance and servicing.
Old shock oil can look like used motor oil, dark with contamination
and loss of lubricity that accelerates wear of shock bodies, rods,
and seals. Seals leak, and valve shims sometimes crack.
Shocks lose nitrogen gas pressure over time, the nitrogen escapes
past the divider piston seal and into the oil!
Our shock maintenance rebuild includes changing the shock oil,
replacement of any worn seals / metal components, and nitrogen gas
recharge. After a maintenance rebuild, your shocks will
deliver as-new performance for less than the price of new.
Shocks are dyno tested and the dyno plot is provided.
A reasonable Maintenance rebuild schedule for a street car is every
5 years. For race cars every 1-2 seasons.
We offer maintenance rebuilds on Podium and Bilstein shocks with a 3
day typical turnaround time.
Custom Valving - We custom
valve specifically for your springs, weight, and planned usage.
All custom valved shocks include a maintenance rebuild.
Custom valved shocks include shock dyno
testing and the dyno plots for your shocks.
We re-valve Podium and Bilstein shocks in-house with a 3 day typical
turnaround time.
Conversion to adjustable nitrogen gas
- We can convert your Podium Street or Bilstein
shocks for external nitrogen gas refilling, fitting an external
schrader valve. This allows you to adjust the nitrogen
gas pressure and recharge as needed. Nitrogen gas pressure can
be used as spring preload and "trim" to spring rates.
Includes a maintenance rebuild and dyno testing. 3 day
typical turnaround time.
Convert to single/double adjustable
- We can convert your non-adjustable Podium or Bilstein rear shocks
to single, or double adjustable type.
Includes a maintenance rebuild and dyno testing. 3 day
typical turnaround time.
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Shock services
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Computer Dyno test shock, plot,
gas pressure, seal drag test
choose qty, adjustable / non adjustable
send shocks to us with printout of the order confirmation email
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Custom valve Bilstein or Podium
shock, includes computer Dyno test
choose qty, adjustable / non adjustable, and pair-matching
fill out custom valve form and send along with
shocks to us with printout of the order confirmation email
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