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.
NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability.
ATV – 1986-81 HON, 1988-82 KAW, 2006-85 YAM, M/C – 2006-96 APRILIA, 2005-97 GAS GAS, 1974-73 HARLEY-DAVIDSON, 2004-65 HON, 2006-81 HUSQ, 2005-73 KAW, 2006 KTM, 1996-77 MAICO, 2006-04 M-GUZZI, 2007-71 SUZ, 2006-71 YAM, SNOW – 1990-74 ARC CAT
- RECOMMENDED USAGE: Modified or high performance applications, or as an upgrade to OE nickel alloy spark plugs
- Trivalent metal plating for superior anti-corrosion and anti-seizing properties
- Outstanding acceleration, high fuel efficiency and durability
- Fine iridium tip ensures durable and consistent spark
Fitment:
Aprilia RS 125 Base 1996 to 1998
Aprilia RS 125 Base 2003
Aprilia RS 50 Base 2002 to 2007
Aprilia Scarabeo 50 2T Base 2005 to 2006
Arctic Cat Cheetah 340 Base 1974 to 1975
Arctic Cat Cheetah 440 Base 1974 to 1976
Arctic Cat El Tigre 4000 Base 1976
Arctic Cat Jag 2000 F/A Base 1978 to 1980
Arctic Cat Jag 3000 F/A Base 1977 to 1980
Arctic Cat Jag 3000 F/C Base 1979 to 1980
Arctic Cat Jag 340 Base 1987 to 1990
Arctic Cat Jag 340 Deluxe Base 1988 to 1990
Arctic Cat Pantera 5000 F/A Base 1977
Arctic Cat Pantera 5000 F/C Base 1977
Arctic Cat Panther 340 Base 1974
Arctic Cat Panther 440 Base 1974 to 1976
ATK 250 Base 1988 to 1990
ATK 250 Cc Base 1991 to 1996
ATK 250 Enduro Base 2001 to 2003
ATK 250 Lq Base 1995 to 2000
ATK 250 Lq Mt Base 2000
ATK 250 Mx Base 1991 to 1993
ATK 260 Enduro Base 2000 to 2002
ATK 260 Lq Base 1996 to 1999
ATK 406 Base 1988 to 1990
ATK 406 Cc Base 1991 to 1996
ATK 406 Mx Base 1991 to 1993
Benelli Velvet 125 Base 2008 to 2009
Beta TR34 260 Base 1986 to 1990
BMW R50/2 Base 1960 to 1969
BMW R60/2 Base 1960 to 1969
Bultaco Frontera 250 Base 1978 to 1979
Bultaco Frontera 370 Base 1978 to 1979
Bultaco Pursang 250 Base 1977 to 1979
Bultaco Pursang 370 Base 1977 to 1979
Can-Am 125 MX-6 Base 1980
Gas Gas EC 250 Base 2010 to 2012
Gas Gas EC 250 Racing Base 2010
Gas Gas EC 250E Base 2011 to 2012
Gas Gas EC 300 Base 2010 to 2012
Gas Gas EC 300E Base 2011 to 2012
Gas Gas Ec Rookie 50 Base 2003 to 2005
Gas Gas Enducross 250 Base 1997
Gas Gas Enducross EC 250 Base 1998
Gas Gas Mc 250 Base 1998 to 1999
Gas Gas Mc 250 Base 2002 to 2004
Harley Davidson SS350 Base 1973 to 1974
Harley Davidson SX250 Base 1975 to 1978
Honda ATC250R Base 1981 to 1983
Honda CB350G Super Sport Base 1973
Honda CB350K Super Sport Base 1968 to 1972
Honda CB360 Base 1974
Honda CB360G Base 1974
Honda CB360T Base 1975 to 1976
Honda CB450 Base 1966
Honda CB500T Twin DOHC Base 1975 to 1976
Honda CJ360 Base 1976 to 1977
Honda CL350 Scrambler Base 1968 to 1973
Honda CL360 Scrambler Base 1974 to 1975
Honda CL450K Scrambler Base 1969 to 1972
Honda CL450K Scrambler Base 1974
Honda CR250R Base 1982 to 1986
Honda CR250R Base 1989 to 2004
Honda CR480R Base 1982 to 1983
Honda CR500R Base 1984 to 2001
Honda Fl250 Odyssey Base 1981
Honda Mr175 Base 1975 to 1977
Honda Mr250 Base 1976
Honda MT125 Base 1974 to 1976
Honda MT250 Base 1974 to 1976
Honda NS50F Base 1990
Honda SL350 Base 1970 to 1972
Honda TRX250R Base 1986
Honda TRX350 Base 1986
Husqvarna Automatic 360 Base 1976 to 1977
Husqvarna CR250 Base 1972 to 1987
Husqvarna CR250 Base 1999 to 2005
Husqvarna CR360 Base 1975 to 1976
Husqvarna CR390 Base 1977 to 1980
Husqvarna CR430 Base 1987 to 1988
Husqvarna CR500 Base 1985 to 1986
Husqvarna GP175 Base 1975
Husqvarna OR250 Base 1978 to 1980
Husqvarna OR390 Base 1978 to 1980
Husqvarna WR250 Base 1972 to 1974
Husqvarna WR250 Base 1976 to 1984
Husqvarna WR250 Base 1986 to 1988
Husqvarna WR250 Base 1999 to 2013
Husqvarna WR300 Base 2009 to 2012
Husqvarna WR360 Base 1976 to 1977
Husqvarna WR360 Base 1998 to 2002
Husqvarna WR390 Base 1979 to 1980
Husqvarna WR400 Base 1985
Husqvarna WR430 Base 1987 to 1988
Husqvarna Wxc 360 Base 1992 to 1993
Husqvarna Wxc 360 Base 1996 to 1997
Husqvarna Wxe 360 Base 1994 to 1997
Husqvarna XC250 Base 1981 to 1988
Husqvarna XC500 Base 1985 to 1987
Kawasaki AR50 Base 1982
Kawasaki KDX220R Base 1997 to 2005
Kawasaki KDX250 Base 1980 to 1983
Kawasaki KDX400 Base 1979 to 1980
Kawasaki KDX420 Base 1981
Kawasaki KDX450 Base 1982
Kawasaki KDX80 Base 1980 to 1983
Kawasaki KDX80 Base 1985 to 1988
Kawasaki KE100 Base 1978 to 1981
Kawasaki KE125 Base 1980 to 1981
Kawasaki KE250 Base 1977 to 1979
Kawasaki KLF300 Bayou 2×4 Base 1986 to 1988
Kawasaki KLT250 Base 1982 to 1984
Kawasaki KX250 Base 1983 to 1985
Kawasaki KX250 Base 1994 to 2004
Kawasaki KX250F Base 2004
Kawasaki KX500 Base 1985 to 1997
Kawasaki KXF250 Tecate 4 Base 1988
Kawasaki KXT250 Tecate Base 1986 to 1987
Kawasaki KZ1000A/J Base 1977 to 1982
Kawasaki KZ1000B/K Ltd Base 1977 to 1982
Kawasaki KZ1000C/P Police Base 1978 to 2003
Kawasaki KZ1000C/P Police Base 2005
Kawasaki KZ1000D Z1R Base 1978
Kawasaki KZ1000D Z1R Base 1980
Kawasaki KZ1000E Shaft Base 1979 to 1980
Kawasaki KZ1000G Classic Base 1980
Kawasaki KZ1000M CSR Base 1981 to 1982
Kawasaki KZ1000R Lawson Replica Base 1982 to 1983
Kawasaki KZ1100A Base 1981 to 1983
Kawasaki KZ1100B GPz Base 1981 to 1982
Kawasaki KZ1100D Spectre Base 1982 to 1983
Kawasaki KZ1100L Ltd Shaft Base 1983
Kawasaki KZ200 Base 1979
Kawasaki KZ700A Base 1984
Kawasaki KZ750B/E Base 1980 to 1982
Kawasaki KZ750F LTD Shaft Base 1983
Kawasaki KZ750H LTD Base 1980 to 1983
Kawasaki KZ750K LTD Belt Base 1983
Kawasaki KZ750L Base 1983
Kawasaki KZ750N Spectre Base 1983
Kawasaki KZ900 LTD Base 1976
Kawasaki KZ900/Z1 Base 1973 to 1977
Kawasaki ZN1100B Ltd Base 1984 to 1985
Kawasaki ZN700A Ltd Base 1984 to 1985
Kawasaki ZX1100 GPz Base 1983 to 1984
KTM 250 EXC Base 1996
KTM 250 SX Base 1996
KTM 250 SX Base 2006
KTM 300 EXC Base 1996
KTM 300 MXC Base 1996
KTM 360 Exc Base 1996
KTM 360 Mxc Base 1996
KTM 360 Sx Base 1996
KTM 440 Exc Base 1994 to 1995
KTM 440 Mxc Base 1994 to 1995
KTM 550 Mxc Base 1995 to 1996
Lamborghini Countach Base 1985
Lamborghini Countach LP400S 1982
Lamborghini Countach LP500S 1982 to 1984
Lamborghini Jalpa Base 1982 to 1988
Lamborghini Urraco P200 1974 to 1976
Lamborghini Urraco P250 1974 to 1976
Lamborghini Urraco P300 1974 to 1976
Maico 250 Base 1981 to 1983
Maico 250 Enduro Base 1978 to 1979
Maico 400 Base 1981 to 1983
Maico 400 Enduro Base 1978 to 1979
Maico 450 Enduro Base 1978 to 1979
Moto Guzzi Breva 750 Base 2004 to 2008
Moto Guzzi Nevada Classic 750 Base 2005 to 2006
Moto-Ski Sonic Base 1976 to 1978
Porsche 911 Base 1968
Porsche 911 E 1970 to 1971
Porsche 911 L 1968
Porsche 911 S 1968
Renault Fuego Turbo 1982 to 1984
Renault R17 Base 1973
Renault R17 Gordini 1974
Renault R17 TL 1974
Scorpion Brut 340 Base 1975
Scorpion Brut 440 Base 1975
Scorpion Range Whip 400PR Base 1976 to 1978
Scorpion Range Whip 400PS Base 1976 to 1978
Scorpion Sting 400 Base 1979
Scorpion Super Stinger 340 Base 1974 to 1975
Scorpion Super Stinger 400 Base 1974 to 1975
Scorpion Super Stinger 440 Base 1974
Scorpion Super Stingerette 340 Base 1974
Scorpion TK 340 Base 1980 to 1981
Scorpion Whip 340PR Base 1975 to 1979
Scorpion Whip 400PR Base 1975
Ski-Doo TNT 340 Base 1973 to 1977
Sno-Jet Astro Jet 340 Base 1974
Sno-Jet Astro Jet 440 Base 1974
Sno-Jet Astro SS 340 Base 1974 to 1976
Sno-Jet Astro SS 440 Base 1974
Sno-Jet S/S Jet 338 Base 1971
Sno-Jet SST 338 Base 1972
Sno-Jet Star-Jet +2 338 Base 1972
Sno-Jet Star-Jet 292 Yamaha Base 1971 to 1973
Sno-Jet Star-Jet 338 Base 1971
Sno-Jet Star-Jet 338 Base 1973
Sno-Jet Super-Jet 338 Base 1970
Suzuki DS100 Base 1978 to 1981
Suzuki DS125 Base 1979 to 1981
Suzuki GS1000 Base 1978 to 1979
Suzuki GS1100E Base 1982 to 1983
Suzuki GS1100ES Base 1983
Suzuki GS1100G Base 1982 to 1983
Suzuki GS1100GK Base 1982 to 1983
Suzuki GS1100GL Base 1982 to 1983
Suzuki GS1100S Katana Base 1983
Suzuki GS400X Base 1977 to 1978
Suzuki GS425 Base 1979
Suzuki GS450E Base 1980 to 1983
Suzuki GS450GA Base 1982 to 1983
Suzuki GS450GA Base 1985
Suzuki GS450L Base 1980 to 1983
Suzuki GS450L Base 1985 to 1988
Suzuki GS450S Base 1980 to 1981
Suzuki GS450T Base 1981 to 1982
Suzuki GS450TX Base 1981 to 1983
Suzuki GS550 Base 1977 to 1979
Suzuki GS550E Base 1977 to 1980
Suzuki GS550L Base 1979 to 1982
Suzuki GS550M Base 1982
Suzuki GS550T Base 1981
Suzuki GS750 Base 1977 to 1979
Suzuki GS750E Base 1978 to 1979
Suzuki GT250 Base 1973 to 1975
Suzuki GT380 Base 1974 to 1977
Suzuki GT550 Base 1975 to 1977
Suzuki GT750 Le Mans Base 1975 to 1977
Suzuki Lt500R Quadracer Base 1987 to 1990
Suzuki Pe250 Base 1977 to 1978
Suzuki RM125 Base 1981
Suzuki RM250 Base 1982 to 1991
Suzuki RM250 Base 2001 to 2008
Suzuki RM400 Base 1978 to 1980
Suzuki RM465 Base 1981
Suzuki RM500 Base 1983 to 1984
Suzuki RM80 Base 1978 to 1981
Suzuki RM80 Base 1983
Suzuki RMX250 Base 1989 to 1992
Suzuki RMZ250 Base 2004
Suzuki Tm100 Base 1974 to 1975
Suzuki Tm125 Base 1973 to 1975
Suzuki Tm250 Base 1972 to 1975
Suzuki Tm400 Base 1971 to 1975
Suzuki Ts100 Base 1978 to 1981
Suzuki Ts125 Base 1978 to 1981
Suzuki Ts250 Base 1977 to 1979
Suzuki Ts400 Base 1972 to 1975
Triumph Bonneville 650 T120R Base 1970 to 1971
Triumph Bonneville 650 T120V Base 1974
Triumph Bonneville 750 T140V Base 1973
Triumph Bonneville 750 T140V Super Jubilee Base 1977
Triumph Trident Base 1991 to 1994
Triumph Trident 750 T160V Base 1975 to 1976
Vespa PX 150 Base 2005 to 2007
Yamaha At2 Base 1972
Yamaha At3 Base 1973
Yamaha CT1 Base 1969 to 1971
Yamaha CT2 Base 1972
Yamaha CT3 Base 1973
Yamaha Dt1 Base 1968
Yamaha Dt100 Base 1977
Yamaha Dt125 Base 1974 to 1981
Yamaha Dt175 Base 1974 to 1979
Yamaha Dt1B Base 1969
Yamaha Dt1C Base 1970
Yamaha Dt1C-Mx Base 1970
Yamaha Dt1E Base 1971
Yamaha Dt2 Base 1972 to 1973
Yamaha Dt250 Base 1974 to 1979
Yamaha Dt3 Base 1973
Yamaha Dt400 Base 1977 to 1978
Yamaha Dt50 Base 1988 to 1990
Yamaha GP300 Base 1976
Yamaha GP338 Base 1973 to 1974
Yamaha GP433 Base 1973 to 1974
Yamaha GP440 Base 1976 to 1977
Yamaha It200 Base 1986
Yamaha It400 Base 1976 to 1979
Yamaha It425 Base 1980
Yamaha It465 Base 1981 to 1982
Yamaha It490 Base 1983 to 1984
Yamaha Mx100 Base 1974 to 1975
Yamaha Mx175 Base 1974 to 1975
Yamaha Mx175 Base 1979 to 1981
Yamaha Mx250 Base 1973 to 1975
Yamaha Mx360 Base 1973 to 1974
Yamaha RD125 Base 1976
Yamaha RD200 Base 1976
Yamaha RD400 Base 1976 to 1979
Yamaha Rt1 Base 1970 to 1971
Yamaha Rt180 Base 1990 to 1998
Yamaha Rt1Mx Base 1970 to 1971
Yamaha Rt2 Base 1972 to 1973
Yamaha RZ350 Base 1984 to 1985
Yamaha Sc500 Base 1973 to 1974
Yamaha TX650 Base 1973 to 1974
Yamaha TX750 Base 1973 to 1974
Yamaha WR250 Base 1991 to 1997
Yamaha WR500 Base 1992 to 1993
Yamaha XS1 Base 1970 to 1971
Yamaha XS2 Base 1972
Yamaha XS650 Base 1975 to 1976
Yamaha YFS200 Blaster Base 1988 to 2006
Yamaha YFZ350 Banshee Base 1987 to 2006
Yamaha YTZ250 Tri-Z Base 1985 to 1986
Yamaha YZ250 Base 1983
Yamaha YZ250 Base 1988 to 2019
Yamaha YZ250X Base 2016 to 2019
Yamaha YZ360 Base 1974 to 1975
Yamaha YZ400 Base 1976 to 1979
Yamaha YZ465 Base 1980 to 1981
Yamaha YZ490 Base 1982 to 1990
Yamaha YZ80 Base 1976 to 1981
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