ATV Florida Forum

General => Tech Corner => Topic started by: 300EXRACER on May 14, 2006, 02:12:34 PM



Title: 300EX EXHAUST ?
Post by: 300EXRACER on May 14, 2006, 02:12:34 PM
i have a stock muffler on my 300ex but sadly it has a large whole from rust on the end and back fires pretty bad so all im looking to do is buy another stock exhaust

so i went on ebay motors and found a 250EX muffler practically new for cheap but will this fit and correspond with my 300ex head pipe and engine?

let me know if you know anything about the subject

thanks a bunch


Title: Re: 300EX EXHAUST ?
Post by: Yamaha72 on May 14, 2006, 04:08:08 PM
Honestly its not worth the money for a new one, just buy a cheap slip-on...

As for your question I do not know if it will fit...


Title: Re: 300EX EXHAUST ?
Post by: klutchbuster400 on May 14, 2006, 06:06:00 PM
get a dg slip on, cheap, and sounds nice if attached correctly, dont bother buying stock. If moneys not an issues get a curtis sparks ;)


Title: Re: 300EX EXHAUST ?
Post by: 300EXRACER on May 14, 2006, 07:46:43 PM
well moneys a huge issue.
i dont have the money for an aftermarket and this pipe is super cheap i just need to know if it will fit.
trust me i would go drop the money on a curtis sparks pipe if i had it.


Title: Re: 300EX EXHAUST ?
Post by: klutchbuster400 on May 14, 2006, 07:50:33 PM
well moneys a huge issue.
i dont have the money for an aftermarket and this pipe is super cheap i just need to know if it will fit.
trust me i would go drop the money on a curtis sparks pipe if i had it.
well since a 300 ex is basically a 250 ex with a different cam, and bore kit, i guess it will fit, but i dont want to give you fasle info and break your new quad so dont go by what i say, find the facts!


Title: Re: 300EX EXHAUST ?
Post by: kfx400rob on May 14, 2006, 07:51:35 PM
i wouldnt think that a 250ex pipe would fit on a 300ex the header is very tiny on the 250, the diameter of the pipe is probly too small


Title: Re: 300EX EXHAUST ?
Post by: ebtrx450r on May 14, 2006, 07:53:25 PM
Call a dealer and have them check part numbers for both quads. Then there will be no question.


Title: Re: 300EX EXHAUST ?
Post by: kfx400rob on May 14, 2006, 07:57:01 PM
well moneys a huge issue.
i dont have the money for an aftermarket and this pipe is super cheap i just need to know if it will fit.
trust me i would go drop the money on a curtis sparks pipe if i had it.
well since a 300 ex is basically a 250 ex with a different cam, and bore kit, i guess it will fit, but i dont want to give you fasle info and break your new quad so dont go by what i say, find the facts!

no i belive that the 300ex engine is actualy a 250X engine with a longer stroke


Title: Re: 300EX EXHAUST ?
Post by: Yamaha72 on May 14, 2006, 09:40:29 PM
well moneys a huge issue.
i dont have the money for an aftermarket and this pipe is super cheap i just need to know if it will fit.
trust me i would go drop the money on a curtis sparks pipe if i had it.
well since a 300 ex is basically a 250 ex with a different cam, and bore kit, i guess it will fit, but i dont want to give you fasle info and break your new quad so dont go by what i say, find the facts!

no i belive that the 300ex engine is actualy a 250X engine with a longer stroke

Correct... :Clap.gif


Title: Re: 300EX EXHAUST ?
Post by: DZ 350 on May 15, 2006, 03:58:40 PM
if u went on ebay for a stock muffler, find a used aftermarket pipe for cheap on ebay, it will sound good, look and perform better than the stock pipe ;)


Title: Re: 300EX EXHAUST ?
Post by: svtbolt04 on May 15, 2006, 05:46:06 PM
The 250ex is a recon motor. The 300ex is not.


Title: Re: 300EX EXHAUST ?
Post by: svtbolt04 on May 15, 2006, 05:50:52 PM
18310-HM3-000 (300ex muffler)
 18300-HN6-000 (250ex muffler)

They are both different. The 300ex has one mounting bracket. The 250ex has two.

250ex wont work.


Title: Re: 300EX EXHAUST ?
Post by: 300EXRACER on May 15, 2006, 11:00:27 PM
aright thanks svtbolt..
that helped a whole bunch.


Title: Re: 300EX EXHAUST ?
Post by: svtbolt04 on May 16, 2006, 01:07:57 AM
It actually depends on the year of your bike. The ones I had posted were for a 2005.

I think the previous years were one mount, but they arent bent right for a 250ex.


Title: Re: 300EX EXHAUST ?
Post by: 300EXRACER on May 16, 2006, 03:13:41 PM
thats exactly right..the guy at honda said the same thing


Title: Re: 300EX EXHAUST ?
Post by: 300EXRACER on May 16, 2006, 08:08:15 PM
anyone know anyone thats selling a pipe for a 300ex cheap?


Title: Re: 300EX EXHAUST ?
Post by: svtbolt04 on May 16, 2006, 08:54:38 PM
What do you consider cheap? You can find pipes that people have taken off of their bikes to put on full exhausts.

I would keep checking ebay because I dont think many people here have 300ex's


Title: Re: 300EX EXHAUST ?
Post by: 300EXRACER on May 16, 2006, 09:28:39 PM
yeaa i know.
thats what ive been doing.
i have close to no money.
im looking to spend like 50 bucks on a stock pipe so atleast i can go riding this weekend.


Title: Re: 300EX EXHAUST ?
Post by: atvtrailer on May 17, 2006, 12:29:40 AM
yeaa i know.
thats what ive been doing.
i have close to no money.
im looking to spend like 50 bucks on a stock pipe so atleast i can go riding this weekend.

alot of stock pipes on ebay sell for like 20-30$, just keep lookin and u will probly find one, stock pipes sell for cheap, unless u go to the dealer and then they want more than a new aftermarket lol