slingshot spark plugs

[jb]

sorry if this has been covered but i can't find anything in the search section.......

what spark plugs do people recommend for a GR77A - 750 slingshot engine?

the standard plug listed for it is the NGK - JR7C which i have never come across before, the bike is fitted with race pipe and pipercross dual foam filters, 36mm standard carbs

[colinworth79]

I would run standard plugs . Not had any problems. . I run stock plugs in a bandit 12 motor that's turbo and running 14 psi with no issues .