450 big bore

[Pro400]

Do any companies make 450 big bore kits for the 400ex i know they 440s but i want some thing a little more competive with the new quads comming out. or should i just get a big stroker kit like a 460 or some thing. i only have like 2000 to spend what are my best options. thanks

[3x440ex]

sell your 400ex for maybe $3500 and with the $2000 extra that you have you can almost buy a new 450r..part out some of the extra stuff you have like the carb.

[NacsMXer]

I just had GT Thunder put their new 450 stroker kit into my engine. Its just a custom 416 bore piston with a 6mm stroke on the crank. I had everything done in about a month for $2500. But I got the entire motor worked over so if you want to go with just the 450 stroker kit and youre on a budget of $2000 I think you should be fine. Its also nice if youre racing because its right at the AMA displacement limit, its actually like 452ccs. Check out http://www.gtthunder.com and give Lazarus a shout, hes a great guy to deal with and has the best prices and turn around time ive seen. Powroll makes some good stroker kits too, but im not sure if they offer a 450 kit or not, if youre not racing then just do a simple 465 stroker or something like that.

[gir]

i would say that if you dont have anything special like a arms or suspension, then it would be best to probobly get a trx450 if possible. but if not, and you want a big bore, i just got back from Trinity racing, i gave them my bike to do a 465cc kit. everything done with labor of taking the engine out and putting together and all cost bout 2750. if you pull the engine out on your own it should be 2300. if thats still too much then they have a 440 kit that runs at about 1800. they said that the 465 puts out a couple (maybe like 4to5) hp more than the new trx450, and the guy i talked to has the new trx, sponsered by tag and other stuff too, so i trust him.

[Dunlap]

I have a new 465 big bore kit for the same price of a 440 kit.

[QuadJunkies]

Originally posted by Mickey Dunlap
I have a new 465 big bore kit for the same price of a 440 kit. :eek: :cool: I bet its a handful.........:blah: :macho

[gir]

2001 Kasea Skyhawk 90~~ Trinity pipe, ,Fast Trekker rears, Douglas rims,holeshot fronts,custom graphics, seat cover,,Fly handlebars. 2002 Eton Viper 50cc~~~ Fast trekker Rears,Holeshot fronts on Douglas rims........

just curious, why do you have a eton viper and a skyhawk?

[QuadJunkies]

Originally posted by gir
2001 Kasea Skyhawk 90~~ Trinity pipe, ,Fast Trekker rears, Douglas rims,holeshot fronts,custom graphics, seat cover,,Fly handlebars. 2002 Eton Viper 50cc~~~ Fast trekker Rears,Holeshot fronts on Douglas rims........

just curious, why do you have a eton viper and a skyhawk? one is for my Son 6yr old son and one for my 10 yr old Daughter.....We done alot of reading up on the new Viper at the time and wanted to try one and see how we liked it.....So far , been very happy with both.....:) The Kasea is getting a FULL Makeover right now and just got a pipe for the 50......

[440ex dragger]

I got a 440 kit for $300 from White Bros. (actually its the old IMS kit). I would get a new 450R if you have enough to do so.

[Pro400]

How much do you think i can get for my 2002 400 with all the exteras it is very clean. i want a 450r but it took me along time to talk him into getting the 400 i have some money but i dont want to put it into my 400 if i will never get it out of it .

[Big - D Racing]

Duncan Racing has a 450 kit but it is a direct ctliner reacement meaning it doesn't take your stoke clinder and bore it, instead they have a whole new aftermarket cylinder that bolts on, it does however require your case to be bored. They ha a 440 version that doesn't require your case to be bored. They call it the PC 4000 or power cylinder 4000 (meaning4 stroke)

[Mr.FDO]

We have a 450cc kit for the 400ex. It costs a little more than the 440 kit because of the custom sleeve. It uses the stock stroke and requires maching the cases. 13.00:1 with 445cc displacement.