What can i get in a big bore kit for my 300ex for a good price? How much of a diffrence will this kit make? And would it be able to beat a 400ex?

 

Your in luck . I am in the process of getting my big bore done as I speak and should have it by the 22nd of this month.Mickey Dunlap is doing mine since I live fairly close to him.The price just for the 330 kit is $275 and $130 for the re-sleeve. That's without labor charges.He tells me that the machine will be very torquey and that yes it will beat out a 400 if you go even deeper, which I'm going to do later on. I had him install the kit put in new valve springs and an oil cooler and it cost me $785. I wanted the cam but fell short on money( the joys of being a home owner) however that is why he installed the springs for me because I am putting in the cam this winter. I don't want to bore you but if you need to know more on costs or mods let me know I love to talk wheelers!!

 

I have done several kits in 250 and 300exs. No it will not out run a stock 400 ex. Now if you do alot more work and a lot more money it will keep up with a stock 400ex. Now for the down side when it is time for rebuild you pay the price again for resleeve and all. drop a 10 to one pistion in. For around $125.00 boring and all, It is the most fun for the buck.

 

will a 10 to 1 piston run with a 330 Kit?

I'm going to get my 300 Rebuilt this winter and i was wondering about this. I figure since it's 6 years old it needs to be done.

Luckywilson. Do you do these 330 kits? And rebuilding?

Moundsville isn't 15 minutes from me!

 

Well all i want right now is a big bore kit for woods riding to make it a little more snappy. I already ordered 22-11-9 dirt devils which should help give me a little more traction. What do you guys think of the amp link? will it make my suspention softer? Ive played around with the suspention settings and none help so will the link help?

 

hey man a 300ex ain't like a blaster....they don't usually need to be rebuilt on a regular basis.....ie every 6 years!....my 250x is a '92 and been raced hard all its life....woren valve guides, burns a bit of oil on start up......but who cares once its going its sweeeeet.....just done a cam chain.....but thats only general wear and tear......drive it like ya stole it!

 

I will be doing some bikes this winter.I did some 300ex's for the drags down at poor boys race way. They did good this year. Just did my friends 99 400ex a stick put a crack in the oil tank ouch $$$$.
Dry sump motors die quick with out oil. It is a 426 now. Runs alot stronger.Im on here a good bit so when it comes time. get in touch with me. If you want referances I can give you alot right in your aera.

 

Racing is about speed. But a larger displacement isn't going too win you the race. Technique is what wins the race!!! Ask any racer, and they will tell you that handling and weight come before power in any type of atv racing.
Get the machine faster through the corners, then worry about strait-away speed.... The races are won in the corners.....

Chris 00' TC Racing 300EX

 

Before i do my big bore, i'm getting Works rear, 400EX A-ARMs, and 400EX works triple rates.

then i'm working on my motor..!