HPI Racing Servo Arm Driveshaft and Diff Cup Set for Micro RS4

Overview

The HPI Racing Servo Arm Set is a genuine replacement combo kit for the HPI Micro RS4 1/18 scale touring car. The set includes the servo arm along with front driveshafts and front differential housing/output cups, making it a major front-end and steering rebuild kit.

This direct-fit replacement is ideal for refreshing multiple front-end components in a single purchase. Note: To complete the front driveshafts, front differential housing, and output cups assembly, you will also need item #HPI73403 (Diff Pinion Gear Set), which includes the front driveshaft ball joints and front differential internal parts.

Key Features

• Genuine HPI Racing Micro RS4 replacement
• Includes servo arm, front driveshafts, front diff housing, and output cups
• Direct factory fit
• Multi-component rebuild kit
• Durable construction

Performance Benefits

• Restored steering response
• Refreshed front drivetrain
• Multi-part rebuild value

Usage Notes

• Pair with #HPI73403 to complete front driveshaft and diff internal assembly
• Use light grease at install

Technical Specs

• Type: Servo Arm + Front Driveshaft + Diff Housing/Cup Set
• Manufacturer: HPI Racing

Fitment

• HPI Micro RS4 (1/18 Scale Touring Car)

What's Included

• (1) HPI Racing Servo Arm Set with Front Driveshafts and Diff Housing/Output Cups

Summary

A multi-purpose front-end rebuild kit for the Micro RS4 — pair with HPI73403 for a complete refresh.