Headers to go with my R4

[Halter]

I was looking to get a new header on my R4 slip on ... to replace this stock ... I was looking into the FmF hi flow header or I was going to get the FMF Powerbomb header...wondering which one u guys like more or noticed a difference....

thanks

[GlowBoy]

Stock one flows good enough for your application, its when you start boring and camming is when you need to get a head pipe.