Expansion Chambers - Are they all made the same?

[Intador]

I'm going to be purchasing a Grubee kit from Motorizedbicycle.ca

And with the purchase of a kit, I get free shipping on the entire order. So I was looking into buying this with it
http://www.motorizedbicycle.ca/exhaust-system/expansion-chamber.html

I like the SBP chamber better, but it costs alot for me to get it shipped to where I am. Is this expansion chamber from Motorizedbicycle.ca even worth getting, or should I just wait until I can afford the SBP?

 

[scotto-]

The banana pipe works ok....I like it better than the stock pipes. I'd say the sbp pipe is better, but you can buy that pipe for cheap and then save for the sbp.

 

[Greg58]

A few members, myself included have made their own pipe. What I learned is a short head pipe exhaust as the pipe you are looking at will help at high rpm, my pipe has a 16 inch head pipe from flange to muffler. It helped the low end and mid range. So choose the pipe for your riding needs, I ride a lot of hilly roads so low end power is what I needed.