An "Exact Fit" replacement muffler eliminates the need for:

An "Exact Fit" replacement muffler is designed to match the original equipment specifications precisely, which means it is intended to bolt directly into the existing exhaust system without requiring any additional modifications or components. This attribute specifically addresses the need for pipe adapters, which are often used when the replacement part does not align perfectly with the existing pipes. By providing a direct fit, the "Exact Fit" muffler allows for a straightforward installation process, ensuring better performance and reliability, as there are no gaps or leaks that might arise from using adapters.

Focusing on the other options, while an "Exact Fit" muffler may also work with existing hangars and typically does not require additional installation tools beyond what is normally necessary for muffler installation, the primary benefit of an Exact Fit design is to eliminate the need for adapters. It simplifies the replacement process by ensuring compatibility with the factory exhaust system.