DG National pipe and silencer on 83 ATC250R Worth it?

[Yamaha Tri-Moto]

I have had my 83 R for a long time and love it but have been considering picking up the DG National Pipe and silencer for it but after shipping its about 600$ CDN

Anyone have any experience with them and do you think its worth the cost? How do they sound? Noticeable power increase? Do I need to change the jetting or can I just adjust?

Thanks in advance!

[christph]

I had a DG on my 84R for a while. It's better than the stock system but not the best out there. I traded mine out for a Bassani, which is one of the best you can get for the air cooled R's. Unfortunately the best pipes tend to be old school and hard to find, but they do show up now and then on ebay, facebook, etc.