A little baffled about the hole on the JP piles

[Gee]

I bought a used JP-3 pipe and I am still wondering what the purpose of the hole/ring is next to the outlet hole. It effectively stops me from adding a stinger I had laying around to it. Tell me they didn't design it that way just to stop me from doing that or so I can hang my RC up hook with it. lol.

 

[Amoeba]

Reinforcement of the pipe exhaust exit tube so it doesn't break. The hole is reduce weight. The JP series of pipes are aftermarket tuned pipes designed for racing and adding a stinger would change the performance profile significantly.

 

[Gee]

Mystery solved, thanks. I wouldn't of thought about the stinger and performace. Appreciate it.