What has you focused on the ST1 on the Atomic side?
The Z2 (or Z2x) will give you all of the performance at a lower price.
Try them both and decide which feels better to you. For my money, the Atomic with the wide exhaust T is where it's at.
The Z2 (or Z2x) will give you all of the performance at a lower price.
Try them both and decide which feels better to you. For my money, the Atomic with the wide exhaust T is where it's at.