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NGK Standard Spark Plug — R6252K-105

Part # 2741
Item #R6252K-105
Fits 16 motorcycles
  • Kawasaki
    • KX 80 R · 1992–1996
    • KX 80 R Big Wheel KX80-R · 1992–1994
    • KX 80 R · 1996–1997
    • KX 80 · 1997–1999
    • KX 80 II · 1997–1999
    • KX 80 W · 1998–2000
    • KX 85 A · 2001–2013
    • KX 85 B · 2007–2013
    • KX 85 I KX85C · 2014–2026
    • KX 85 II KX85D · 2014–2026
    • KX 100 KX100B2, KX100B3, KX100B4, KX100B5, KX100B6, KX100B7, KX100C, KX100D, KX100F · 1992–2015
    • KX 112 KX112A · 2024–2026
    • KX 125 · 1990
    • KX 125 · 1991–1994
    • KX 125 K KXEK1V · 1997
  • Suzuki
    • RM 100 · 2004–2026
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NGK Standard Spark Plug — R6252K-105
NGK Standard Spark Plug — R6252K-105
NGK Standard Spark Plug — R6252K-105
NGK Standard Spark Plug — R6252K-105
Product Details

Pure race plug: solid-copper-core nickel construction tuned for high-RPM, high-cylinder-pressure engines where the heat range matters more than service life.

  • Compact, solid-copper-core design with a nickel ground electrode optimized for the heat range, not the service interval.
  • Heat ranges run colder than street plugs (typically NGK 8–10) so the tip stays out of the pre-ignition zone in built engines and forced-induction race motors.
  • Available in standard 14mm and racing 10mm thread sizes, in projected and non-projected tip geometries to match the chamber.
  • Solid terminal or removable nut variants — pick the one that matches your plug-cap style; check the variant title.
  • Short service life by design — these are race weekend plugs, not 30,000-mile street plugs.

Spec: R6252K-105

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