Best TRX 90 pipe

[sanddude]

Hey there,
I was wondering who has the best dino numbers on their pipe. And will the same pipe work for a stock bike or would you have to buy a seperate pipe to run on a modified bike?:ermm:

[Pappy]

we have been running the big gun race series full system and its great. the builders pipes (Robbs Racing etc) probably will make more power on a built (fully built) engine.