XRAY T4 Composite 4-Hole 1.3mm Shock Pistons - Arrowmax AM-T4-308037A3  [AM-T4-308037A3]

Arrowmax composite pistons for XRAY T4 shocks

The Arrowmax AM-T4-308037A3 kit contains four composite pistons designed for use in XRAY T4 shock assemblies. Each piston uses a four-hole layout with a 1.3mm bore, matching common piston geometries so you can pair them with your existing shock bodies and chosen oil.

Fitting is straightforward on standard T4 shock bodies: remove the shock shaft and piston assembly, swap in the Arrowmax pistons, then reassemble with the correct oil level and seal condition. Check piston travel and endplay during reassembly to avoid binding inside the shock cylinder.

These pistons adjust damping by altering internal flow. The 4-hole, 1.3mm setup gives a mid-range flow profile that helps balance compression and rebound; combine small oil viscosity changes and spring swaps to tune handling for different track surfaces.