







Isuzu NPR/NPS Truck rear lower shock mount kit
Rear Lower Shock Mount Reinforcement (Isuzu NPS / NPR)
It’s fairly common for standard Isuzu NPS and NPR trucks to suffer failure of the rear lower shock absorber mounts on the differential housing. The factory mounts are thin and lightly welded, and in many cases they tear away from the housing, even when running the standard shock absorbers.
The risk increases significantly when upgraded shock absorbers are fitted, as the additional damping places far greater loads on the factory mounts. When a mount fails, the shock can hang from the upper mount, leading to bent brackets, destroyed shocks, or complete loss of the shock assembly. With quality aftermarket shocks costing anywhere from $1,200 to $4,000 each, this is far from ideal.
Our Solution
We designed and manufactured ultra heavy-duty rear lower shock mounts to permanently eliminate this issue.
Kit Features:
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10mm thick laser-cut steel mounts
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Key-way cut for structural strength
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Braced design between mounts
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Supplied spacers to correctly align the shock absorber
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Prevents shock body contact through full suspension travel
These mounts completely replace the factory brackets and are designed to withstand significantly higher loads than the original setup
Installation Requirements
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Factory mounts must be cut off
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Differential housing ground back to bare metal
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Mounts welded into place by a highly experienced MIG welder
Important Note:
It is imperative that when welding on a diff housing, welds should never be done vertically for long sections; this will cause the housing to warp. The majority of their strength in the welds is along the top and the bottom of the housing and within the bracing welded horizontally with only small stitch welds vertically.

