seems like it would. stock tip u can barly fit youe thumb in the end. the one this guy has you can fit your whole fist in it. ill have to wait and see. another thing.. can you use regular unleaded 87 octane in these? or how about 89 octane. and i think i even have a 92 octane but it like 50cents more per gallon. this guy says he mixes race fuel with 92 octane... is that bad for it?

 

I'm not too familiar with the 450r or the HRC kit, but you probably don't need to be mixing racing fuel. You could get away with just some straight 92 O most likely.


EDIT: Scratched the rest.