Difference: Top Speed vs 5Zigen exhaust?????
 

So im on the market for an exhaust system. I came across the Top Speed review and for the price it really sound great and the gains are decent. But i had my doubts because of the price and kept looking.

Then i found this site:

370Z Exhaust.com - Sound clips, photos + places to buy

which shows different exhaust systems for the 370Z. And I see the 5Zigen exhaust and it looks the same as the top speed but costs a lot more.

The link for the top speed from ebay is here:

Nissan 370Z 09-10 Resonator Catback Exhaust System - eBay (item 390152276944 end time Apr-29-11 12:04:34 PDT)

Am I missing something here ?????? What is the difference between the two???

the brand name. you pay extra because it says 5zigen on the box. maybe better materials?

I believe the Top Speed is a knock off of the 5ziegen? Also the 5 Ziegen is in japan and comes with a Y pipe. Prob better steel is used?