K1 - the cheapest, crappiest, droniest, most useless fitting exhaust available on the Zed.
How many times do we see a post that starts with "I have looked at all the options available for a replacement exhaust, scouring the world, with no bias on price, no stone unturned, and have decided this is the one for me [insert link to cheap ebay tat], what do people think?"
I am part of the 5k post club, I am allowed to be sarcastic