Installing a FMF 4.1 Factory Slip-On | Dennis Kirk Tech Tip

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Presented by Dennis Kirk
Welcome to this installment of our latest feature, the Dennis Kirk Tech Tip. In this episode, Donn Maeda walks through the installation of a FMF 4.1 Factory Slip-On, while highlighting some tips to make your life a little easier through the process. Press play and check out these tips before switching out your muffler! Drop a comment below and tell us what you want us to cover next!
Get your FMF 4.1 here: www.denniskirk.com/

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Опубликовано:

20 июл 2022

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Комментарии : 33

@duffyrides Год назад

Swap, do more videos like this. I've been riding my entire life, changed many exhaust systems, and don't own this particular bike, but I still watched the entire thing and enjoyed it. Great content!

@JoshStreetDesign 9 месяцев назад

Just put this on my 22 SX-F 450 today and OMG this thing sounds AMAZING!!!! So LOUD!!!

@so-caladv1179 Год назад

great video!

@jaredgordon2798 Месяц назад

I bought the full system and its amazing how quiet it is

@mxracer158 Год назад

Still looking for a 23 350 and the 4.1 to go with it.

@timquinn8830 Год назад

I bought a power core 4 hex muffler for my 2021 350 xcfw do I need a tuner if I am only installing the slip on ?

@schumif1champ Год назад

I actually lost the spark arrestor on mine it blew right out on this exhaust and bike. Im actually going to put a new one in. To me the bike actually does not feel as good. The down low 450 feel it had no longer is there. Not really sure I can notice the gain at the top end of the rev it’s just louder. Would be interesting to see this on a Dyno with and with out the spark arrestor.

@reedwhitlock9644 Год назад

Whats the part number for the slip on is it the same as a 2022 or did it change because of the new frame?

@booger65man Месяц назад

How does the FMF unit with and without the spark arrest or compare to the stock muffler from a loudness perspective? I think the stock muffler seems loud and I am going for as quiet as possible. Thanks.

@FamilyMXTV Год назад

I installed this on my 2023 crf450r. With the RTS do you need to rejet? On deacceleration, is it normal for backfire and pops when the spark arrestor is removed ?? Would love the feedback ! Thank you!

@colbymullaney9908 Год назад

Your bike has fuel injection so there is no jetting

@FamilyMXTV Год назад

@@colbymullaney9908 could it be running lean from the slip on?

@colbymullaney9908 Год назад

@Brady Arnott a slip on shouldn't make enough difference that you have to get a ecu tune but if you got it tuned it would maximize power gains

@Riskyyz Месяц назад

I recently bought fmf 4.1 exhaust and I can’t get the spark arrestor out it doesn’t come out as easy as in the vid I tried pulling it out but just won’t come out and tips?

@scottyscamen Месяц назад

Did you ever figure this out @riskyyz

@joshstreet2336 Год назад

I wanted to repack my 4.1 on my XCF but is literally impossible to get the slip on off from the header. I cheated it up I've pounded on it with a mallet nothing will make that thing even budge a millimeter. I laughed out loud when I saw this one just slip right off.

@laviengvong Год назад

what part # is the exhaust?

@haydencunningham561 Год назад

Yeah it would be nice to be able to find an exhaust I’ve been trying to find one for months with no luck looks like I’m gonna have to get it through the ktm dealer

@7agol242 Год назад

I didn’t find it where can i find a fmf exhaust for ktm 450 sx-f 2023 ?

@jamprd Год назад

same, ive emailed fmf and they said they are exclusive to ktm and other brand dealers only atm, but yet ive messaged loads of ktm dealers and they have none for the 2023 models

@brutus6328 Год назад

@@jamprd I put my KTM 2023 SX-F 350 into Dennis Kirk, Motosport to search and both say NO FMF exhausts fit the bike! No Akrapovic fit either. Not understanding this. I even went to Rocky Mountain Atv and it says only Pro Circuit fits the 2023 SX-F 350. WTF?

@jamprd Год назад

@@brutus6328 there is Akrapovic systems available for the 2023 models

@brutus6328 Год назад

I went to Dennis Kirk and put in my 2023 SX-F 350 and it says no pipes fit,......none! Also says no pipes fit at Motosport and Rocky Mountain ATV. The only pipe they all say fit the 2023 SX-F 350 is the pro circuit T6. WTF? Can anyone explain why this is?