How can you tell if a brand new caliper is bad?

To determine if a brand new caliper is bad, inspect it for visible defects such as cracks, leaks, or damaged seals. When installed, check for proper alignment and ensure that the piston moves smoothly without sticking. Additionally, listen for any unusual noises when the brakes are applied and monitor for uneven brake wear or reduced braking performance. If any issues arise, it may indicate a faulty caliper that needs to be replaced.