NGK Iridium Spark plug CR9EHIX-9

The NGK iridium spark plugs currently represent the highest quality technical solution.
They have an iridium alloy tip on the central electrode, which is welded in a special process using a laser. Iridium is one of the hardest metals in the world, melts at 2450 ºC, and is highly resistant to spark erosion; these are the spark plugs used in MotoGP and Formula 1. This material allows the lifespan of standard spark plugs to be doubled.

Furthermore, the precious metal allows the central electrode to be considerably thinner (0.6 mm thick), significantly reducing the required ignition voltage and helping to improve the distribution of the flame front in the combustion chamber.
Check that your motorcycle uses this spark plug

Compatible models:
Honda VFR 800 FI 1998-2002
Honda VFR 750 R 1987-1993
Honda VFR 750 F 1995-1997
Honda CBF 650 2014-2015
Honda CBR 600 FA ABS 2011-2013
Honda CBF 250 Hornet 250 1996-2007
Honda CBF 600 Hornet 600 1998-2014
Honda CBR 600 F 1987-2000
Honda CBR 650 F 650 2014-2015
Honda CBR 250 RR 250 1990-2003
Honda CBR RR Fireblade 919 1996-1999
Honda CBR RR Fireblade 900 1992-1995
Honda CBR RR Fireblade 929 2000-2001
Honda CBR RR Fireblade 954 2002-2003
Honda CBR XX Superblackbird 1100 1996-2002
Honda CB 500 S 1994-1995
Honda CRF 150 R 150 2007-2013