NGK BR 8 EIX spark plug

Use for 2018-25  300 cc applications if desert racing or mostly faster riding.  Use in 250 cc applications for slower singletrack riding.
 
Reduces risk of fouling and provides a noticeably snappier throttle response. This is really something you want to add to a 23-25 300 TBI bike, if most of your riding is faster, and 23-25  250 cc TBI bike for singletrack. 2023-25. 250 cc TBI bike use a 9 heat range plug for motocross or faster riding.