XRAY 308028 Composite PSS 0.8mm 2-Hole Pistons (Set of 4)  [XR-308028]

XRAY 308028 - Composite PSS 2-HolES 0.8mm Piston (4)
Price:
CAD$16.99
Brand:
XRAY
Model:
XR-308028
Condition:
Brand New
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Tune Suspension with XRAY 308028 Composite PSS Pistons

For racers wanting precise shock response, the XRAY 308028 Composite PSS 0.8mm Piston Set is a practical upgrade. Built for X4 and T4 platforms, these pistons suit both ULP and SLP shock assemblies and arrive factory-drilled at 0.8mm to make heavier shock oils easier to use, helping deliver more consistent cornering.

Performance Highlights

  • Pre-drilled 0.8mm Holes: Lets you use thicker shock oil to reduce mid-corner wallow and stabilise rebound.
  • Compatibility: Made specifically for XRAY X4 and T4 PSS shock units for plug-and-play fitment.
  • Complete Set: Four pistons included so you can convert all four shocks at once.

Fitting Advice

When installing the XRAY 308028 pistons, match oil viscosity to the 0.8mm ports for the desired damping. Test progressively heavier oils on the track to find a balance between response and traction for more predictable lap times.
Remark :
Due to limited stock availability, please notice that some XRAY items may have to order from the factory and the ready time is around 4-6 weeks. Customer purchases the item is assumed to accept the waiting time which allows us to order directly from the manufacturer if the item is out of our warehouse.

Will these pistons fit standard X4 shocks or only PSS versions?

These pistons are designed for the PSS shock variants used on X4 and T4. Standard shock bodies may require validation for fitment before use.

Which shock oil weights should I start with?

Begin testing one grade heavier than your current setup and move up in small steps. The 0.8mm holes are suited to higher viscosity oils to improve mid-corner stability.

How often can I reuse these composite pistons?

Composite pistons are durable but inspect them for wear and scoring during routine rebuilds. Replace if you notice irregular oil flow or visible damage.

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