NGK Iridium IX Spark Plug Box of 4 (DR9EIX)

NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti-fouling. Tapered cut ground electrode provides improved starting, idling and throttle response. The Iridium fine wire center electrode's durability is six times harder than platinum. Iridium alloy's extremely high melting point is perfect for today's engines. For even greater performance consider upgrading to an NGK Ruthenium HX plug.This Part Fits: Year Make Model Submodel 1992 Ducati 888 Strada Base 1980-1981 Honda CB900C Custom Base 1981 Honda CB900F Super Sport Base 1985-1986,1988-1990 Kawasaki EN450A 454 LTD Base 1990-1996 Kawasaki EN500 Vulcan 500 Base 1996-2009 Kawasaki EN500C Vulcan 500 LTD Base 1994-1996 Kawasaki EX500 Ninja 500 Base 1997-2009 Kawasaki EX500 Ninja 500R Base 1981-1982 Kawasaki KZ305 CSR Base 1982 Kawasaki KZ