NGK Spark Plug - FR9BI-11 (4709) Category_Clutch ~ Can be used as

~ Can be used as a front or rear SR421 SERIES

On early Yamaha seal heads All Balls have done away with the multi piece design

Regulated energy: The power charging your battery is steadier and smooth

Not just to the battery

Excellent dry and wet grip

NGK Spark Plug - FR9BI-11 (4709) Category_Clutch ~ Can be used asNGK have over 80 years of experience in spark plug manufacturing and are the world leader in spark plug technology. NGK has an extensive range of spark plugs, each with their own unique characteristics specifically engineered to its application and designed to suit a broad range of motorcycles, ATVs & UTVs in Australasia. With NGK's dedication to quality, outstanding reliability and state of the art manufacturing techniques, you can rely on your NGK