I have a stock 1989 PX125E that i just bought this spring and have been reading quite a bit about upgrades.
This summer I would like to upgrade the exhaust system only.
I am not sure if i will do a displacement upgrade later on, so no need to plan for that.
I am wondering, if i were to only upgrade the exhaust, which one should i use?
And what difference in performance can i expect with an exhaust upgrade?
Or, on the flip side, is it pointless to upgrade exhaust only?
Any help is much appreciated.