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

Composite piston set for T4 shock tuning

The Arrowmax AM-T4-308037A3 kit contains four composite pistons intended for XRAY T4 shock assemblies. Each piston is built with four flow holes and a 1.3mm bore, allowing you to match piston characteristics to your shock body and oil selection.

Installation on standard T4 shocks is simple: strip the shock shaft assembly, swap the existing piston for the Arrowmax unit, then reassemble using proper oil volume and seal condition. Confirm piston travel and endplay to prevent binding within the shock cylinder.

These pistons change damping by altering internal flow. The 4-hole 1.3mm configuration gives a mid-level flow useful for predictable bump absorption and steady rebound control. Combine small oil and spring adjustments to dial handling for different track surfaces and conditions.