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Just to clarify - Needle ?
#505420 11/12/2012 11:46 AM
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I have an 07 Speedmaster, and I'll be going in to the carbs for the first time here in the next week or so. I have ordered a bunch of stuff, and know that I may not need/use all of it. I was about to order some needles but then got to reading that my stock needles are the "thruxton" needles. Can someone please verify?

Re: Just to clarify - Needle ?
MikeVanTso #505421 11/12/2012 11:50 AM
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The only way to be sure is to pull the needles (under the top diaphram cap) and read the code.
Thruxton needles are NBZT.

More info in the Tech Vault.


Tony G '03 America
Re: Just to clarify - Needle ?
TonyG #505422 11/12/2012 8:29 PM
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Stock 2007 SM needles are NBZY, not Thruxton NBZT.

Re: Just to clarify - Needle ?
B02S4 #505423 11/12/2012 9:57 PM
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are nbzy just the regular bonneville needles or something different? Worth replacing?

Re: Just to clarify - Needle ?
MikeVanTso #505424 11/12/2012 11:15 PM
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Quote:

are nbzy just the regular bonneville needles or something different? Worth replacing?




1. No
2. Yes
3. Maybe

Re: Just to clarify - Needle ?
B02S4 #505425 11/12/2012 11:58 PM
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gotcha. thanks for all the help.

Re: Just to clarify - Needle ?
B02S4 #505426 11/13/2012 4:46 AM
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Quote:

Quote:

are nbzy just the regular bonneville needles or something different? Worth replacing?




1. No
2. Yes
3. Maybe




I tried them and didn't think they were any improvement.

Although they were very thirsty.


FrankW Ex Speedmaster rider, went to the Dark Side now riding an America.

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