4.0mm Arm Reamer Tip for RC Suspension - Arrowmax AM-492023 (Tungsten) Tip Only  [AM-492023]

Improve suspension pivot geometry

The Arrowmax AM-492023 cutting tip is an RC-scale reamer element intended to correct or finish 4.0mm arm pivot holes on plastic and composite suspension arms. The tungsten steel tip is provided without a handle and is designed to remove burrs and restore roundness so ball studs and turnbuckles seat cleanly.

Mount the tip in a suitable holder or shank for RC tooling and work at low speed with gentle feed pressure to preserve the carbide cutting edge. The focused 4.0mm diameter addresses the pivot area where precise hole shape contributes to predictable suspension articulation and consistent setup readings.

Routine care is simple: clear metal or plastic debris after use, avoid side loads that can chip the tip, and check the cutting face before each workshop session. This accessory is intended for model parts only and not for use on full-size vehicles.