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Question about jet kits. cbr125r

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Old Jun 18, 2012 | 04:41 PM
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Smile Question about jet kits. cbr125r

Searched high and low for a good answer....

Ive recently got a venom exhaust and kn filter, just wondering which jet kit i am going to need for as little price as possible? and where to find it? Thanks!
 
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Old Jun 18, 2012 | 05:52 PM
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Your best bet is to contact the exhaust manufacturer. They should have jetting specs for your bike if they are selling the pipe. They will be able to tell you what to do as far as jetting, air screw and needle adjustments. You will probably only have to change the main jet as the others are adjustable. They will also be able to guide you so your bike is set correctly for whatever elevation you are riding.
 
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Old Jun 18, 2012 | 05:58 PM
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Originally Posted by justasquid
Your best bet is to contact the exhaust manufacturer. They should have jetting specs for your bike if they are selling the pipe. They will be able to tell you what to do as far as jetting, air screw and needle adjustments. You will probably only have to change the main jet as the others are adjustable. They will also be able to guide you so your bike is set correctly for whatever elevation you are riding.
Thanks for the answer, would i be better buying a full kit then or just certain parts? cheers again.
 
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Old Jun 19, 2012 | 01:07 AM
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Dynojet Jet Kits - Offering Motorcycle Jet Kits & ATV Jet Kits

£50.
 
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Old Jun 19, 2012 | 05:54 AM
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Cheers mate, but no 'Buy it now' button on there...
 
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Old Jun 20, 2012 | 01:10 AM
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would i be better buying a full kit then or just certain parts?
Your number one factor is the pipe. They will have suggestions for jetting. K&N filter mods are usually covered as well.

Its up to you if want to buy a kit, or just the parts you need. Personally, I'd see what the pipe manufacturer has to say and go from there. If the only change they suggest is something like raising the e-clip and going up a jet size, your better off just buying the main jet for the carb.

The other thing to consider is you may not have to do anything. If the bike is running fine right now, pull the plugs and look at them. If they look good, theres no sense in changing anything. Of course, if your experiencing hesitation or lack of throttle response since the added mods, then definately dig into the carb and see what needs to be changed.

But either way, even if you buy a kit, your going to have to read the sparkplugs to see what effects it is having. So might as well start there to see if anything even needs to be changed.
 
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Old Jun 20, 2012 | 05:57 AM
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Originally Posted by Nikephenom
Cheers mate, but no 'Buy it now' button on there...
Dynojet Jet Kits - Offering Motorcycle Jet Kits & ATV Jet Kits

 
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Old Jun 20, 2012 | 01:28 PM
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Originally Posted by justasquid
Your number one factor is the pipe. They will have suggestions for jetting. K&N filter mods are usually covered as well.

Its up to you if want to buy a kit, or just the parts you need. Personally, I'd see what the pipe manufacturer has to say and go from there. If the only change they suggest is something like raising the e-clip and going up a jet size, your better off just buying the main jet for the carb.

The other thing to consider is you may not have to do anything. If the bike is running fine right now, pull the plugs and look at them. If they look good, theres no sense in changing anything. Of course, if your experiencing hesitation or lack of throttle response since the added mods, then definately dig into the carb and see what needs to be changed.

But either way, even if you buy a kit, your going to have to read the sparkplugs to see what effects it is having. So might as well start there to see if anything even needs to be changed.

Ive contacted Venom and they said their exhausts are for use with standard engines apparently, i do have a k&n panel fitted so im not sure what to do at the moment, i might get someone to look at the carb and see whats goin on around there for now... plugs just come out pretty black also..
 
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Old Jun 26, 2012 | 02:00 PM
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Also wondering... what is the Original Main jet size for the Cbr125r? thanks...
 
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