Hobbypower Aluminum 12mm Hex Hub Brake Discs for 1/10 On-Road RC Cars (4-Pack, Black & Silver)

These Hobbypower aluminum brake discs offer a direct upgrade for 1/10 scale on-road RC cars. Each set includes four discs, each 32mm in diameter and designed to fit 12mm hex hubs. With a 4mm hex adapter hole and a lightweight 3g per piece, they suit models like the XI D3 and D4. The black and silver finish adds a custom look while the aluminum construction helps resist wear during normal use.

How Do These Brake Discs Fit Your RC Car?

The 12mm hex hub is a common standard on many 1/10 on-road cars. The 4mm hole in the hex adapter aligns with standard axles. Before installing, verify that your car's hex size is 12mm and the axle diameter is 4mm. The 32mm disc diameter is sized to work with typical caliper setups for this scale. Weight is kept low at 3g each to minimize rotational mass.

Specifications at a Glance

Common Questions About These Brake Discs

Are these disc brakes compatible with my 1/10 RC car?

They are designed for 1/10 on-road cars with 12mm hex hubs. Many popular models like XI D3 and D4 use this size. Check your car's hex hub to confirm 12mm.

Do I need any additional parts to install these?

The package includes only the four discs. You will need your existing brake calipers and mounting hardware. No screws or adapters are supplied.

What is the expected lifespan of these aluminum discs?

Aluminum is softer than steel, so these discs will wear over time, especially if used on abrasive surfaces. They are intended as a lightweight performance upgrade for on-road use.

Choosing Between Aluminum and Steel Brake Discs

Aluminum discs like these reduce unsprung weight compared to steel, which can improve handling and acceleration on smooth tracks. However, they may wear faster under heavy braking. For casual running or lower-power setups, aluminum provides a good balance of performance and cost. The 32mm diameter is a standard size that fits many aftermarket calipers.