How about this as an exhaust?

I've been running a straight through pipe for quite a while now, and O only have positive things to say about it. It's probably the biggest performance increase you can get from these engine.
 
Nougat said:
A straight pipe will give you some performance gain over the stock pipe, because the lack of backpressure will cause it to run leaner. However, too much lean will shorten the engine's lifespan considerably. An expansion pipe exhaust is preferable in every way to a straight pipe.
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My bike runs fine. I was actually running it somewhat rich for quite a while, and change the needle setting about a week ago.
 
There has been a very good reason for NOT using it but apparently you don't want to listen to that advice. So good luck with it and I hope you don't ruin your motor too fast with it.
 
Hey, if I started this up, and had a spark at the end of the exhaust, would it shoot flames n stuff? Would be pretty cool.
 
cause it weights alot? a car muffler weighs like 10- 25 lbs. even cherry bombs arent that light. the expansion chamber is light, mounts easily, and increases your power band. if those dont make you want a expansion pipe then your crazy lol.
 
PR3C150N said:
Twin Expansion chamber looks awesome. anybetter then one?
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I have a friend that has one on his kitted motobecane (70cc) and he said it hits nicely @ around 35.....
I think hes running polini stinger tips /baffels.....

It looks cool and with a little welding it would be neat on a MB....
 
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