Whats the best single or twin pipes out there?

[2datop07R]

Any advice on what the best single or twin pipe i can get for my 07 800R? Any other mods i can put on it to help the performance and get the best climbing ability?

 

[SnowSnob]

Try a set of Crank Shop Mondos. Guys with the 800R seem to like them at elevation but they didn't work to well for my HO.

 

[winter brew]

Stock pipe and clutching.