HUDY 107634 Precision Arm Reamer 4.0 x 120mm with Replacement Tip  [HSP-107634]

Precision Tuning for RC Suspension

The HUDY 107634 Arm Reamer is a must-have for RC hobbyists who want to adjust their 1/8 scale car suspension. This tool lets you accurately resize plastic mounting holes so arms move freely without excess slop or damage.

Tackle Binding Suspension

Suspension that binds can upset handling and lap times. Use the HUDY 107634 Arm Reamer to remove tight fits and restore consistent pivot action, helping the car track more predictably.

Built for Scale RC Work

With a 4.0mm tip and 120mm overall length, this hand-ground reamer matches typical 1/8 scale geometry. The finely cut micro scurfies on the tip resize holes cleanly, avoiding tears or stress to the plastic.

Step-by-Step Reaming Technique

• Fit the 4.0mm tip into the suspension arm hole.
• Apply light forward pressure while turning the tool.
• Push until the tip reaches the handle, then reverse while rotating to withdraw it.

Following this routine produces a correctly sized, non-binding suspension arm ready for setup and run time.