It appears to be NGK r6918b-8. Doing a little searching I found the spark plug above listed as: "NGK special spark plug for (1996-2000) RM 125." This same spark plug is listed in the 2003 RM 125 Service Manual as the correct spark plug for that engine.
The spark plug for this bike is Ngk Br8es.
br9es
ive always had pretty good luck with either a br8es or br9es
What is the spark plug gap for a 2006 yamaha ttr 125?
The spark plug gap setting for a 2001 Suzuki RM 250 should be set at .024 inches. This is equal to about .6 mm.
ngk br8eg
Spark plug BR9EG part # 98079-59679 usually about $5.00
It will be stamped on the case next to the filler plug.
NGK CR8E is the best spark plug to replace the original
Br9eix
.028-.032 will work good.