Exhaust system for my 2014 300xc-w

[KentuckyRacer]

What is a good exhaust system for my 14' 300xc-w? Will it make a noticeable difference in power delivery?

[motonack]

Such a vague question. What are you looking to do? What kind of power delivery are you looking for? What would you consider good to be?

[KentuckyRacer]

If your familiar with the xc-w... I would like more hit off bottom in 3rd gear specifically. I ride harescrambles and notice when a coming out of turns it takes a while for 3rd to come alive. You can feather the clutch and manually raise rpm. On this bike second gear signs off really quick. Need something to zip from corner to corner in tight woods. I probably could just stay in second but its not as smooth as a ride. To sum things up I would like more hit on bottom in 3rd gear without having to shift from 2nd to 3rd so much coming in and out of corners

[Charlies510]

Change the sprockets, power valve spring I have the red one in my 14 300xcw and it really pulls outta the corners in the woods in 3rd. I'm running stock sprockets IMHO I would start with sprockets lots cheaper

[KentuckyRacer]

@ charlies you just simply changed out PV spring without any adjustment ? How many more teeth on sprockets? Front and rear?

2014 300xc-w

[motonack]

Well if you want quicker accelleration, then you want more teeth on the rear and less on the front. 13/51 is what ive been running on my bikes for the past 3 years and find it perfect

[KentuckyRacer]

For real though... What's a good exhaust?

[redwheeliemonster]

Sounds like your after an fmf gnarly.

Edited September 5, 2014 by redwheeliemonster

[orangyktmthing]

For real though... What's a good exhaust?

I would play around with the gearing and pv springs, first. That stuff is cheap, also, the stock pipe set-up is actually pretty good. Well, as long as you don't need a spark arrestor. If you are dead set on getting an expansion chamber, the gnarly is a good choice. Another thing that you can look into is either the jd jetting kit or switching to the suzuki needle (I don't know the specific model number of the needle, but it is easily found with a bit of digging).

Edited September 6, 2014 by orangyktmthing

[KentuckyRacer]

So if I got a gnarly... I would need the expansion chamber? I'm new to KTM and 2t.

[KentuckyRacer]

I was thinking about getting the Akrapovic silencer. What are some thoughts on this?

[pre-mixed]

I would play around with the gearing and pv springs, first. That stuff is cheap, also, the stock pipe set-up is actually pretty good. Well, as long as you don't need a spark arrestor. If you are dead set on getting an expansion chamber, the gnarly is a good choice. Another thing that you can look into is either the jd jetting kit or switching to the suzuki needle (I don't know the specific model number of the needle, but it is easily found with a bit of digging).

NECJ out of a 2008 Suzuki RM250 it really works well in these bikes.

The stock pipe and silencer on these bikes really is a very good system. You could go for a shorter silencer if you are looking for more bottom. A PC 304 or I guess even a shorty the R304 or FMF also makes shortys but that is all dependent on if you need a sparky or not.

I agree with the advice to play with your power valve and gearing before any thing else though

So if I got a gnarly... I would need the expansion chamber? I'm new to KTM and 2t.

The Gnarly is an expansion chamber not a silencer

[Charlies510]

It's sounds like the op has some cash burning a hole in his pocket hopefully he spends it wisely but if you do want a whole new exhaust I will take your stock pipe and silencer from you

[cohl]

With my XCW adding 2 teeth to the rear sprocket solved my problem.  Take a few minutes to tune your power valve. Try one turn in and one turn out to see the difference.  I ended up one turn in with the red spring.

[orangyktmthing]

I was thinking about getting the Akrapovic silencer. What are some thoughts on this?

I default on stuff that is built in the USA, so either fmf or pro circuit usually gets my business in the exhaust department. Plus, I don't think the akrapovic silencer has a spark arrestor (I could be wrong).

[helix66]

Well if you want quicker accelleration, then you want more teeth on the rear and less on the front. 13/51 is what ive been running on my bikes for the past 3 years and find it perfect

What was the stock setup?

My 14' came with 13/50 and it seems perfect for me.

[motonack]

Yeah 13/50 is stock, yes.

[KTMRider4Life]

An aftermarket expansion chamber is not always "better" in the sense of power. The KTM chambers are all well tuned imho, by changing the chamber you're really just moving the power around in most cases, rarely do you get "more"  everywhere. 

 

Gnarly - Yes it will increase the bottom end power of the bike but at the expense of top end power.

 

Fatty - I prefer this pipe as it has about the same bottom end power but gives a bit of extra juice up top. 

 

The FMF pipes are more durable as the stockers are likely to crack and break. That being said I've used and even repaired many of the stock exhausts because they work well imho. As others have stated youi're probably better off doing what the others have stated. 

[zig06]

My 300 pulls pretty good on the low end in 3rd gear ~ after a JD jet kit and installing the red PV spring.  If those two are not enough then a FMF Gnarly pipe should, beyond that go up two teeth on the rear sprocket.