CR9EIA-9 NGK Spark Plugs for Yamaha
The World leader in spark plug technology and performance. This NGK spark plug is a work-horse and at the heart of every smooth running engine around the World. This CR9EIA-9 spark plug fits the years of (2002-2003 Yamaha YZF R1) that we're able to service to you. This spark plug is able to fit many other models as well so be sure to check your owner's manual for the proper application for your motorcycle.