Crf150r fmf 4.1 

Benji Banks probably needs re packing

How About No you can’t repack a 4 stroke pipe

@@BigBad21 yeah you can all mufflers on bikes need repacking

its gonna make the bike louder lol

@@BigBad21 all mufflers need repacking lol what are talking about

Man this was so long ago I wanna say 38 on the pilot I can’t remember the rest let me see if I can find out for you.

@@samreinholtz4301 You’re kinda late for that comment

@@GG-cw1er haha

Lil bit

He more than likely had to, these racing 4 strokes will never run right if you put an aftermarket header or muffler and don’t rejet them.

What is the correct jetting for it because I’ve ordered the same exhaust set up

I've always thought the same thing but you know it looks cool 😂

expansion chamber

Smaller version of an expansion chamber. 4 strokes don’t need to make more compression in the engine that’s why it’s smaller

Joe Clarke 650

Kris Sellers where did you get it?

Joe Clarke ebay

Kris Sellers thanks 🤙🏻

Liam S I think it is, yes. Expensive system... but hi-end stuff.

It’s just a CRF 150 r that’s what cc and model

Ryan Noel i think its jd jetting JDH009

Yes it is best for you to re jet the carburetor.

Ok thank you.

Yes factory 4.1 with the mega bomb header

Joshua Moore u probably can’t even afford one and I’m sure if u could mommy and daddy got it for u

Your just jealous