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Phew!! I also have a Honda 400ex (The gray one in my profile pic) and I have the 16cc bore kit. I'm so glad that you considered this one and not the 40 kit. The 40 kit are known for overheating and ruining your bike. Hey let me know how much of a pain in the a** adjusting the timing is, cause it's a very large pain in the a** let me know if you have any tricks to help make it easier lol.

Good Luck,
Cameron
 

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The stock carb should be fine. The jets have in my 416 are

48 pilot
170 main

Set the timing to factor settings


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I have never ordered a jet kit before. I have a parts store very close to my house I get my jets from.

Also jetting all depends on elevation

A Lexx is fine on a stock header, I ran a lexx slip on for a while. I’m not impressed. You might as well just run a straight pipe


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A couple things.
About to cooling, with only having the 416 you shouldn’t have a problem with heat. I added to the scoops to my bike and didn’t notice a difference

About the caps. I have a couple off one of my parts bike that I could send you, PM me


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A couple things.

About to cooling, with only having the 416 you shouldn’t have a problem with heat. I added to the scoops to my bike and didn’t notice a difference



About the caps. I have a couple off one of my parts bike that I could send you, PM me





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I agree with the heat not being an issue to an extent. But i cant help but notice there are sand tires on this quad. And if hes riding in sand then he will 100% have over heating issues. I only ride a sand quarry sometimes and it get so hot i can feel the heat come up through the seat. Sand is a whole different animal. Its like your riding in an oven.


I didn’t catch that, good eye slammed. I never have ridden in sand so I wouldn’t know :)


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Yeah mixed dunes and trails. Would rather it be over cooled then under haha



Xplicit youre my hero, PM sent.


If only they had liquid cooled on the Honda 400ex. I think you would quite literally have a tank. And no problem bro :)


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Cool thanks Ranger, i may look into it when i rejet (if needed, at 42/162 right now) otherwise ill just keep a bungee on it haha


Don’t be a hater of the zip tie choke holder. Hahaha I’ve been running one on my 400 for years


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