Brake caliper adapter is used, for example, for mounting extra brake calipers in the rear, this is often used when building an operating car where it is desired that a separate brake circuit is fitted. This can be an advantage as activating the hydraulic parking brake does not affect the foot brake or the front brake. These brake caliper brackets are thoroughly tested and made of really good material so that they withstand heavy loads. You can buy fittings that are welded on or bolted on.