Where to buy specific NGK plug

[12at]

Hey guys,

Ive been searching hi and low for a specific NGK Platnium plug and my local motor factors dont seem to stock or get a hold of.

Its NGK R7420-115  been advised a good plug to run with my water inj and cdi..

If anyone can guide me to a site or a place that may sell.

Cheers

[12at]

dont worry bought local for a good price