XRAY T4 1.3mm Composite Pistons by Arrowmax AM-T4-308037A3  [AM-T4-308037A3]

Composite shock pistons for XRAY T4

This Arrowmax AM-T4-308037A3 kit supplies four composite pistons intended for RC-scale shock assemblies used on XRAY T4 chassis. The pack contains 4 pcs configured with four flow holes and a 1.3mm bore specification as stated in the product name, making them a direct option when matching piston geometry to your shock body and oil choice.

Installation is straightforward for standard T4 shock bodies: remove the shock shaft assembly, swap the existing piston for these composite units, then reassemble the shock with the correct oil volume and seal condition. Verify piston travel and endplay before final tightening to prevent binding inside the shock cylinder.

For setup and tuning, these pistons are intended to alter damping response by changing internal flow. The 4-hole, 1.3mm configuration offers a mid-range flow profile useful for drivers seeking predictable bump absorption and steady rebound. Use them alongside incremental oil viscosity changes and spring rates to dial in handling and response for track conditions.