Rear Suspension; Nrs™ Rear Suspension System; Bikes Equipped With A Giant Nrs™ Air Shock - Giant NRS 2004 Owner's Manual

4. Rear suspension.

The rear suspension for Giant NRS™ bicycles and frames is provided by Giant NRS™ Air shocks.
For a description of the NRS™ Air shock, refer to section 4-2: "Bikes equipped with a Giant NRS™ Air
shock".
WARNING:
Improper adjustment of rear suspension shock can result in unstable conditions or loss of
control.
4-1 NRS™ rear suspension system.
™
NRS (No Resonance System) bikes are equipped with dedicated air-type rear shocks.
These rear shocks have separated "positive" and "negative" springs.
The positive (air) spring's main function is to absorb the shock impact.
The negative (coil) spring (which is much smaller) makes the positive spring function smoothly and
prevents a harsh top out feeling when the shock returns to its original position.
The air chamber has a valve to change the air pressure with a shock pump. By inflating the air chamber
the NRS™ system can be set up in such a way that maximum efficiency, comfort and control easily can
be obtained.
Bikes with NRS™ system come with a shock pump with gauge free of charge!
Please use this pump to inflate the rear shock!
Air pressure has to be checked before every ride, slight air loss might occur over a few days standing.
4-2 Bikes equipped with a Giant NRS™ Air shock.
Figure 3 shows the Giant NRS™ Air shock:
A = Rebound damping adjust knob
B = Air valve
C = Air valve cap
D = Can
E = Stop
F = O-ring
The Giant NRS™ Air shocks have an air chamber with a valve (B) to set "SAG" or "no SAG", and an
external rebound damping adjust knob (A) to control an internal piston that regulates the extension or
rebound damping of the shock.
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