Tamiya M-05Ra Reinforced Ball Cup Set RC Differential Part - 54238

The Tamiya 54238 M-05Ra Reinforced Ball Differential Cup Set is a performance upgrade part designed specifically for the Tamiya M-05Ra M-chassis radio control car. The TAM54238 cup set replaces the standard differential cups with reinforced versions, improving durability and consistency in the ball differential under hard driving conditions. If you're running an M-05Ra on tight circuit tracks and pushing it hard, this is a direct-fit upgrade that addresses one of the first components to show wear.

Key Features

• Reinforced construction compared to standard M-05Ra differential cups, offering greater resistance to wear under repeated stress
• Designed as a direct fit for the Tamiya M-05Ra ball differential — no modification required
• Helps maintain smooth, consistent differential action by restoring or improving cup integrity
• Tamiya option part, manufactured to the same tolerances as the original drivetrain components
• Suitable for club racing or regular track use where differential reliability matters

What's Included

• Reinforced ball differential cup set (quantity as per Tamiya packaging for the M-05Ra)

What You Need

• Tamiya M-05Ra chassis to install this part
• Basic RC tools (screwdrivers, ball differential grease recommended) for installation