Z4///M back boxes

M

Machine monkey

Lifer
I have a set of these and brand new clamp kit for sale. I can modify them one of 2 ways
Bypass pipes
Or the internal resonator mod.
I will supply them with a set of my exhaust tips plus original tips polished.
I have these advertised else where for more.
But a forum only price of £250 takes these away. Collection preferred from OX28.
Or buyer arranges collection I am happy to package them up.
I could also fit them for a small fee.

Thanks monkey

These are now sold but I am happy to discus any exhaust work.
 
That’s a great deal Mat, I have the bypass mod done on the MR and I really like the sound, shouldn’t think these will hang around at that money :thumbsup:
 
Joneeboy said:
Have you any pics, OP?
Click to expand...

If the tips or the internal mod?
If you use the search function look up machine “monkey exhaust tips” You will find loads.
And do the same for “bypass pipes” and you should be able to find some for the internal mod too.
I will check my laptop when I am gone later. I haven’t done these for some time. So don’t have any on my phone.?
 
Hello Machine Monkey!

I just sent you a PM on the topic of OEM back boxes and ask if you could come to the rescue...let me know.

A
 
Darren Slone said:
That’s a great deal Mat, I have the bypass mod done on the MR and I really like the sound, shouldn’t think these will hang around at that money :thumbsup:
Click to expand...

Got a vid of the bypass mod?
 
Attilio said:
Hello Machine Monkey!

I just sent you a PM on the topic of OEM back boxes and ask if you could come to the rescue...let me know.

A
Click to expand...

Didn’t you buy a set and get them shipped to be modified by someone?
 
R60BBA said:
Darren Slone said:
That’s a great deal Mat, I have the bypass mod done on the MR and I really like the sound, shouldn’t think these will hang around at that money :thumbsup:
Click to expand...

Got a vid of the bypass mod?
Click to expand...

Sure there must be in hear use the old search function. I have done them before but sure I don’t have a vid myself sorry.
 
Truth said:
Attilio said:
Hello Machine Monkey!

I just sent you a PM on the topic of OEM back boxes and ask if you could come to the rescue...let me know.

A
Click to expand...

Didn’t you buy a set and get them shipped to be modified by someone?
Click to expand...

I did... and haven't heard back much since they were delivered to the workshop... :(
 
R60BBA said:
Darren Slone said:
That’s a great deal Mat, I have the bypass mod done on the MR and I really like the sound, shouldn’t think these will hang around at that money :thumbsup:
Click to expand...

Got a vid of the bypass mod?
Click to expand...

No I haven’t sorry, there are many on here that have had it done and in fairness I like the sound better than the Supersprints on the MC :thumbsup:
 
Attilio said:
Truth said:
Attilio said:
Hello Machine Monkey!

I just sent you a PM on the topic of OEM back boxes and ask if you could come to the rescue...let me know.

A
Click to expand...

Didn’t you buy a set and get them shipped to be modified by someone?
Click to expand...

I did... and haven't heard back much since they were delivered to the workshop... :(
Click to expand...

How long has he had them?
 
So this is what i can do. Cut it open remove the gubbins. Then build and weld in this type of resonating chamber. the wadding is then replaced and welded up. This gives a deeper slightly louder exhaust. with many more pops bangs and excitement.
IMG_0028.JPG
 
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