Where is the best place to get the Mikuni carb kit, Im assuming I should avoid the cheap ones which are obviously Chinese rip offs, and how much should I be looking at paying for one. Thanks.

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Buell S1 Lightning
Triumph Rocket3
Suzuki GT750
Kawasaki H1B
Honda 400 Four
Royal Enfield Bullet Diesel.
Kawasaki Z1300 ( current project)

5 years ago I paid £175 for one in the States although it`s getting them sent here which can be damaging to health. Last one was £185. Have bought them for £80 second hand in UK . New here I bet they`re £300.

From a brief look, the Chinese ones do no have mikuni in raised lettering in the casting on the tickover adjuster side. For £75 it may work for a while
https://www.ebay.co.uk/itm/HSR42mm-for- ... 0005.m1851

Thanks that gives me something to look at to identify a real one, whats the opinion on the Mikuni, I would assume that it makes the bike run a bit smoother lower down, the short time I got out on my bike in the summer it was magnificent above 3 grand but a bit clunky bellow is this where we expect to see the benefit, and as you said previously I will use my steering damper money on something more useful.

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Buell S1 Lightning
Triumph Rocket3
Suzuki GT750
Kawasaki H1B
Honda 400 Four
Royal Enfield Bullet Diesel.
Kawasaki Z1300 ( current project)

If you haven't already, make sure your S1 has full USA gearing. The single biggest bang for the buck upgrade to those bikes. By far. The change from switching out a Keihin carb to a Mikuni depends on how well/badly the Keihin is set up. It's quite possible it's been negatively impacted by "improvements" over the years. The HSR42 Easy Kit works pretty well out of the box.

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Try doing this to yer fueller...........

Yes my bike was imported from USA so has the correct gearing it will just hit about 115 which is by far fast enough for me so Im sure thats sorted, the bike doesnt run to badly with the standard carb, but as we all like tweaking our bikes I thought the Mikuni would be a good upgrade , what difference does it make? some people seem to think it makes a big difference is it worthwhile ?

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Buell S1 Lightning
Triumph Rocket3
Suzuki GT750
Kawasaki H1B
Honda 400 Four
Royal Enfield Bullet Diesel.
Kawasaki Z1300 ( current project)

I checked it out and the easy kit retails at £444 is that about what i would expect to pay for one?

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Buell S1 Lightning
Triumph Rocket3
Suzuki GT750
Kawasaki H1B
Honda 400 Four
Royal Enfield Bullet Diesel.
Kawasaki Z1300 ( current project)

or about £300 odd if I got it from the Usa, how do I know I am not getting a Chinese rip off is That marking on the side the only way to identify a genuine one?

_________________
Buell S1 Lightning
Triumph Rocket3
Suzuki GT750
Kawasaki H1B
Honda 400 Four
Royal Enfield Bullet Diesel.
Kawasaki Z1300 ( current project)

https://www.ebay.co.uk/itm/1996-1998-Bu ... SwL8Vdeo0h
Dear things

looking at that I can get a new complete kit from the USA for just under £300 including postage and import.

_________________
Buell S1 Lightning
Triumph Rocket3
Suzuki GT750
Kawasaki H1B
Honda 400 Four
Royal Enfield Bullet Diesel.
Kawasaki Z1300 ( current project)

I'd go that route

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We haven't met yet.

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2017 KTM 690 Duke
2001 M2
2019 Street Triple RS
2004 Monster S4R
Wilier La Triestina

Posted that earlier

must be vintage now then

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Feros Ferio

That's a different one it must be one of those Chinese rip offs it say Hrs42 for Mikuni I think I would be better forking out for the real thing at £300

_________________
Buell S1 Lightning
Triumph Rocket3
Suzuki GT750
Kawasaki H1B
Honda 400 Four
Royal Enfield Bullet Diesel.
Kawasaki Z1300 ( current project)