This system is offered with straight through type resonator located on the midpipe which helps to reduce exhaust volume/ loudness with minimal restriction.
There is a noticeable difference but it is not a huge difference between resonated and non-resonated. We recommend the resonated version if you prefer a quieter exhaust note, and/ or plan to add other exhaust or turbo related components. Each additional performance exhaust related component may increase the loudness of the exhaust. Adding a high flow downpipe, upgraded turbo charger, etc... will change the loudness and tone of the exhaust. Keep this in mind when deciding on a resonated or non-resonated version. 

Offered with polished stainless steel tips, or burnt finish stainless steel tips. The burnt finish is achieved using a chemical process. This vibrant finish will fade over time depending on use, cleaning, and care.