Good luck finding a stock arrestor. I've been trying for a year now. The stealer tells me it only comes with the ENTIRE MUFFLER. I think I'm going to make one.

I think there was a psychological increase in power when I removed mine. Since it SHOULD increase power, I believed that it did. Any gains, I suppose, are so negligible that they aren't worth the noise. I wish I'd not ruined mine removing it.