440ex big bore kit

[gcart2]

recently i blew up my stock 400ex. i obviously need a new top end. i want to do 440 big bore but i ma bit confused. if i do a 440 kit will my fourwheeler be rideable off track? if so would it still be an all day rider? this is killing me.

[XXXRACER165]

Yep, Rock Solid Reliable...............If you do it right.

[Groves187]

I have all the Mods in my Sig with with my 440ex and i ride mine all day with no problems.

[gcart2]

obviously since i told u i blew up 400ex u might have guessed i ride hard.. too hard. would long hard hard rides over heat this easyer than stock?.... all i have is dyno jet k & n lsr a arm and axle.

[XXXRACER165]

Originally posted by gcart2
obviously since i told u i blew up 400ex u might have guessed i ride hard.. too hard. would long hard hard rides over heat this easyer than stock?.... all i have is dyno jet k & n lsr a arm and axle.

It will be fine trust me.

[gcart2]

there two ratios i can choose from... 11:1 or 12.5:1... what would be best for me. i will be spending time on trick and off. i want something i can get lots of hours out of. since u have 440 do u no what kind of good hard hours i can egt out of it?

[Ruby Soho]

go 11:1. more reliable, can run pump gas. if you go 12.5:1 youll need to buy a hd crank too. either way get HD studs if you go 440. the stockers will pull out.

[XXXRACER165]

Originally posted by Ruby Soho
go 11:1. more reliable, can run pump gas. if you go 12.5:1 youll need to buy a hd crank too. either way get HD studs if you go 440. the stockers will pull out.

Couldn't have said it better myself!

[gcart2]

is 12.5-1 a lot better?
the studs.... whats that? i am not dumb however never heard that
i make 150 a week and i have 100 dollars now. i plan on getting hc stage 2 and a sparks full exhaust.


2004 400ex
lsr +2 a arms
lsr +2 axel
k&n air filter
pro armour bumper
pro armour pegs
pro armour nerfs
fmf power core 4
dyno jet kits

[Ruby Soho]

its not much better.

the studs are the bolts holding the head to the jug. they are weak and pull out in stock form. so order some from GT thunder and have them installed. youll be fine that way. just make sure you get them if you go 440.