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View Full Version : best cdi for 300ex?



fasterthanhell
08-29-2005, 08:13 PM
need a cdi cant find one

Trevor
08-30-2005, 07:44 AM
How safe are these? Do you still have the rev limmiter just at a higher rpm? How much do they usualy cost?

300ex13
08-30-2005, 08:42 AM
there safe and it is still the rev limiter but allows the engine to rev out much higher and brings better power from the engine
they run at lowest about 40....i wounsnt get a big gun b/c it needs a full battery to even start the quad...i havent looked into cdis much so i cant tell u a good one but do not get the big gun...

Colby@C&DRacing
08-30-2005, 08:50 AM
our most popular one is the ricks electric cdi which raises the rev limit 1000 rpm

300exOH
08-30-2005, 09:05 AM
Originally posted by Colby@C&DRacing
our most popular one is the ricks electric cdi which raises the rev limit 1000 rpm

Does it change the rev limit for reverse also?

Colby@C&DRacing
08-30-2005, 09:19 AM
not that I know of.

300exOH
08-30-2005, 09:30 AM
What options are there for raising the 300ex reverse limiter if any?

deathman53
08-30-2005, 06:16 PM
I'm told a 350x cdi fits on too, someone here might know if it does any good, I know a 350x has a real high rev limit or no rev limit(part of the reason why they have a problem with the cam journals scoring, the main reason is a lack of oil and high revving makes it worse).

trict_out
08-31-2005, 05:46 PM
go with ricks cdi i got one from c&d and i love it.

MA rider
08-31-2005, 08:49 PM
get a Gtthunder cdi box

dork
09-02-2005, 12:53 AM
if you get an OEM 300ex cdi thats been modified to remove the rev limiter, it will also remove the limiter in reverse(same circuit). you will have no problems starting it with any type of cdi on the 300ex, the 400ex's have that problem because some companies are just selling xr250 cdi's that are for kick start bikes. be careful of cheap aftermarket cdi's on ebay and such, they're usually inferior imports that can have problems. the 350x cdi has no rev limiter, but won't work with the 300ex. it will work on the 250x when you switch two wires.