NGK V power 7 plug
$5.99Price
Use for 2023-25 125-300 cc applications. This is a special V power plug from NGK. It's listed as a 7 heat range but NGK says it's more like a 7.5.
It has a slightly extended electrode, which casues the combustion process to start and complete a little sooner.
Throttle response is much better than a stock plug and even better than the iridium plug.