Fastrax 4mm Throttle Ball Socket

The Fastrax 4mm Throttle Ball Socket (FAST42) is a compact linkage component designed for throttle control assemblies in radio-controlled models. Its 4mm sizing suits throttle ball configurations where a matching 4mm interface is required.

Ideal as a service item or spare, this genuine Fastrax part helps keep linkage movement consistent and dependable. Refer to your model’s manual to confirm sizing and installation details.

Suggested Compatibility

• Throttle linkage setups that use 4mm ball hardware