Are these: http://www.ebay.com/itm/4X-BRISK-Sp...Parts_Accessories&hash=item1c3014321d&vxp=mtr worth the extra cost vs these: New NGK CR9EHIX 9 Iridium Spark Plugs 6216 Qty 4 | eBay Would be for a 5th gen.
Is that for 4 or one on the first add? It is in Asia........... :crazy: Just use OEM and call it good.
Use the CR9's. I have seen too many posts about the Brisk plugs failing in some way, or even messing with the way the bike runs, for some strange reason.
engines are designed around the spark plug. use the stock plug, and nothing else. don't use a champion in a jap motor, a bosch in an american motor, or a denso in a euro motor. It sounds stupid, but even the slightest difference will affect flame propogation.