XRAY T4 Touring Shock Upgrade 1.2mm 4-Hole Pistons by Arrowmax AM-T4-308037A2  [AM-T4-308037A2]

Composite 1.2mm Pistons with Four Flow Holes

Arrowmax AM-T4-308037A2 pistons are small, replaceable parts designed for shock tuning on XRAY T4 and similar 1/10 touring platforms. The set contains 4 composite pistons, each featuring four 1.2mm holes to shape oil flow and damping behaviour in standard touring dampers.

These pistons are offered as an aftermarket tuning or replacement option for XRAY T4 setups. Composite material provides a compromise between wear resistance and cost while keeping mass down. The 1.2mm four-hole arrangement produces a moderate-to-high flow restriction relative to designs with fewer or smaller holes.

Installation follows typical touring-car shock procedures: disassemble the damper, remove the original piston, slide the Arrowmax piston onto the shaft, and reassemble using existing seals and spacers. Confirm correct piston alignment and stroke before finishing, and always clean components to protect seal life.

Practical setup advice

• Choose these pistons to refine mid-range damping; the four 1.2mm holes increase resistance versus larger openings.
• Combine piston selection with oil viscosity and spring choice to tune handling precisely.
• Verify shaft straightness and endplay after fitment to prevent binding that can look like poor damping.