has anyone tried any of the big bore kits for the klx250sf? which one has optimal performance 300,330,350? how much more extra power does each actually offer?

 

Search and you shall find. There are many threads on this topic.

 

 

Welcome to the forum.

You might do well to take the advice of the previous posts and do a little searching.

Many of your questions are already answered and easily accessible with just a teeny bit of effort.

But, I'll bite.

I have the 351 kit on an SF. It's awesome.

There you go.

 

Hey fr4nci5q0...

Yeah... I hate it when people answer a question with "do a search"....

I have an 09 KLX250sf that I put in the Bil Blue 351 kit, with the snorkle, block-off plate, and FMF exhaust. Didn't see a valid reason to get the pumper carb, just rejetted the stock carb.

The difference is great, well worth the money. The bike now has some snap to it.

 

RicH2 i used to hate that answer as well. But it is really the best option. You will also get info alot quicker instead of waiting for replies.

 

Agree, and I think telling someone to do a search is one of the best answers you can give someone especially when talking about the 351. I did alot of searching but still started a few threads of my own when I didn't find the answer I was looking for.

 

True story. Searched and read for months before deciding to take the plunge. Then more months before actually pulling the trigger. Some have taken years. You don't need to take that long, but it's well worth your time to search and study. Be a student.

 

That's me too! I'm going to take the plunge in April/May.

 

I am as well.