Quick answer
Replacing rear upper suspension arms on RC cars is a straightforward job that restores handling and prevents further damage. Use original spare parts for a precise fit and follow the steps below to do it safely.
Why replace rear upper suspension arms?
Worn or broken rear upper suspension arms cause poor alignment, uneven tire wear, and reduced steering response. Ball heads can loosen over time, leading to sloppy articulation. Replacing them restores smooth movement and extends the life of your RC car.
Original vs. aftermarket parts
Original spare parts like the BEZGAR Rear Upper Suspension Arm with Ball Heads (Part Number 16240) guarantee 100% compatibility with specific models (HP161, HP161S, HP163S). Aftermarket arms may require modification or have looser tolerances. For a direct replacement, stick with OEM parts.
Step-by-step replacement process
- Step 1: Remove the wheel and lower suspension arm: Take off the wheel and tire assembly. Then remove the lower suspension arm by unscrewing the pivot pins or bolts. Keep the hardware organized. Common mistake: Forgetting to support the chassis—use a stand or block to prevent the car from tipping.
- Step 2: Disconnect the old upper suspension arm: Locate the rear upper suspension arm. Unscrew the ball head from the hub carrier and the chassis mount. Gently pull the arm free. Checkpoint: Inspect the ball head for wear or play—if loose, replace it along with the arm.
- Step 3: Install the new upper suspension arm: Attach the new arm's ball heads to the chassis mount and hub carrier. Tighten the screws firmly but avoid overtightening—ball heads should pivot freely without binding. Common mistake: Overtightening the ball head can crack the plastic hub carrier. Use threadlocker on metal-to-metal joints.
- Step 4: Reattach the lower suspension arm and wheel: Reinstall the lower suspension arm, then the wheel and tire. Torque all fasteners to spec and check for smooth articulation. Checkpoint: Cycle the suspension through full travel—if it binds, loosen and realign the arm.
- Step 5: Test drive and adjust: Take the car for a short test run on a flat surface. Listen for clicking or popping, which indicates a loose ball head. Recheck alignment if the car pulls to one side. Final tip: After the first run, re-torque all suspension bolts—they can settle after initial use.
Parts you might need
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Rear Upper Suspension Arms with Ball Heads(16240): This BEZGAR Rear Upper Suspension Arm with Ball Heads (Part Number 16240) is an original spare part designed for precise fit and reliable performance. It ensures 100% applicability for selected RC car models. Using an original part avoids fitment issues and saves time—no filing or shimming required.
Rear Upper Suspension Arms with Ball Heads(16240)
