Hawk Exhaust Replacement
 

i would fit it first to make sure they look big enough to me.

there is also a copper gasket that you want to get. someoen will chime in with a link. about $3.00

You might need to get a little bracket extender for the muffler, but some people have got away with bending the pipe for it to fit. Be aware that if you do bend it, it can be in contact with the airbox.

The holes do need to be drilled out to 1/2". I would take the pipe in and have done. I did it myself and It was a pain.

yes the holes do need to be expanded out a bit, how much? well, thats going to depend on the sweat-shop that put the thing together. i would say between 1/4 to 1/2 a inch is about right.

one thing no one on here (that i've seen) will tell you is that these china "exhausts" are NOT a direct bolt on. mine required a LOT of tweaking to get it so it wasnt rubbing on the engine casing and the back support by the rear brake reservoir. oh and the air box. and believe me, stainless steel does not want to bend at all.

and lastly, if its touching the air box it well melt it (ask me how i know!) my solution was to cut off about 1 inch of the air box, fashion a piece of plastic to fill the gap and used JB Weld Plastic Epoxy to get it all back into shape (dont forget the can of flat black.) unfortunately i couldn't prevent the back piece from rubbing in the back, so to minimize the contact i put a U shape bracket in there so it has less surface to transfer heat and its been ok since then. oh and, heat wrap does NOTHING to prevent direct contact heat transfer other then slow it down a bit.

pictures attached. enjoy. (and the melted look is just my shoddy application of the epoxy, it hasn't melted at all)

https://lh3.googleusercontent.com/lF...I=w260-h346-nohttps://lh3.googleusercontent.com/Yp...c=w699-h932-no

Its a china bike nothing is a direct bolt on. :)

The studs on the engine are about 7mm and the holes in the flange need to be 1/2" for it to fit without cutting off the ends of the flange.

You can call me crazy but I was the first one to buy the RCH exhaust here. It was made for the Honda CRF150F and CRF230F. I took notes from the guys that were buying the stainless steel full exhaust and it led me to ebay to find something that was cheaper and cut weight. It does require mods to make it fit.

What makes this website great is people post what they have done and give other people ideas. :)

I did not have those issues except widening the the holes a 1/4 inch ,I guess the cheaper version is not an exact replica of the pro-circuit the t-4 I'v installed on mine.I used a cobalt drill bit to drill the holes.

I used condensed milk out of the can to cool the bit and lubricate it when drilling stainless steel. Don't let the drill bit get too hot. Once it starts to heat up, it means the lubricating qualities of the cassien in the milk has been used up. So dip it again. Also, don't forget to buy a copper o-ring for the head/pipe interface. Genuine Honda, please. Same o-ring as fits the CRF230F, and others....ARH

Dremel
 

Here's how I did the exhaust bracket mod on our CG motor.

On purpose or vision problems? 😀
So what makes milk better than oil?
I'm afraid to ask what you put in your coffee.....

The cassien in condensed milk with stands the heat of drilling better than dino oil. I'm sure by now they have much better hi temp oils than they had in the 1980's. I put half and half in my coffee. I never liked "canned cow" in my coffee....ARH

i was juggling whether to get new exhaust or de-cat the oem! tihs has made up my mind im going to de-cat the oem. im cheap like jerryhawk!

hey guys was thinking about this tonight on my ride home has anyone de catted their bike then bought the new exhaust,if so what do you think?is it worth the 130.00?

Yes, I think it was jerryhawk, a member on here. I still prefer the aftermarket exhaust. $130 for a complete exhaust is cheap compared to most moto slip ons. Last full exhaust I bought for a motorcycle cost me nearly $600 and the last slip on I bought cost me also $400.

thanks Ben just trying to get opinions not really a issue on money just dont want to piss it away if beating holes in the baffles and taking the spark plug arrester and cat out do the same.brand new hawk about 60 miles did all mods except exhaust and hit 58 on the new digital dash,i also put the correct tire size in the cluster,carb i feel is jetted right but maybe its because the bike isnt broke in,i weigh 165.

:tup:
A de cat and muffler gut will work about as good as replacing the entire exhaust.

Well - Maybe. Unless quality control has improved a bunch in the last three months, the inside of the head pipe is usually a bubble gum weld disaster. That and the exhaust gasket that comes with the bike is pretty bad. I believe that the copper o-ring original Honda gasket is much better. And look into that head pipe area at the quality of the welds. Maybe you will decide a new head pipe is a good idea....ARH

ARH you are a true resource of knowledge. You remind me a bunch of my father in law. He is a super awesome dude. He is 92 years old and a wealth of info. He can get by with nothing. He still lives on the farm he was born on in the 20's. He gets up every day at 4:30 am ( I had no idea there was a 4:30 am I thought 4:30 was only in the PM) to tend to the Chickens, rabbits and other small animals. He got rid of the big animal about 10 years ago, cuz A-hole neighbors kept cutting the fence and chasing cow at 1:00 am sucks.

I swear if there was a massive EMP and we were all thrust into the dark ages my father in law might not even know. He still slaughters and grows his own food. They have a gravity well still pumping water. My 5 year old son hangs out with him nearly every day because I know if it beneficial to both.

I joke about almost everything but know that I'm listening and learning as much as I can.

For the Math experts out there the reason a 92 year old has a 5 year old grandson is that he started having babies at 50! well at least he much younger wife.

my wife and i were both 46 when we had our little one.

I bought one of these for my boys CRF150f...
cost $85US with free shiping off Alliexspress...
Is prob what the Ebay seller payed for it then put
his bit on top...
I gutted the cat & turned the chamber into a power bomb...




...

Thanks a lot guys for your info,right now it is gonna be 70 in Ohio so today is all about riding ,tomorrow snow so ill tear it apart then.

Boy did I earn a reputation around here. lol Not cheap but economically thrifty. :lmao: Nahh your right , Cheap bastard. lol

economically thrifty yea thats it. it kills me to see people changing the oem tires right off the bat......wear em out first! we must be kindred spirits.

:tup: I like the way you're thinking. lol

:lmao:

Some have used the old "Header Pipe Mounting Flange" for the new "Muffler Mount" ;)

Looking good and some nice pictures of the Hawk frame with the exhaust. :)