Arrowmax AM-190991 Arm Reamer Set 3.0, 3.5 & 4.0 x 120mm Precision Kit  [AM-190991]

Workshop Tool for Accurate Arm Holes

For serious RC tuners who value tight tolerances, the Arrowmax AM-190991 Arm Reamer Set provides three sizes—3.0mm, 3.5mm and 4.0mm—designed to refine suspension arm holes with consistent results.

Built for Precision and Long Life

Each reamer comes with a sharp, purple anodized hollow aluminum handle that keeps the tool light while offering a secure grip. The non-slip finish and clear size rings make it fast to select the right reamer when you are in the pits.

Blades are machined from special spring steel to resist torsion and stand up to repeated use. The rotating aluminum end caps let the tool turn comfortably in your palm for controlled reaming on delicate plastic or composite arms.

How It Improves Suspension Setup

Use these reamers to open and true up arm pivot holes to reduce binding and unwanted friction. Cleaner, more accurate holes help suspension parts move smoothly and can make a noticeable difference in handling and consistency on track.