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Discussion Starter #1 (Edited)
I got the Silent Riider exhaust silencer install but did not actually fasten it to the muffler shield as a test to check on fit and sound before I started drilling joles.

Does it work - ABSOLUTELY YES. The sound level is now fairly constant from idle to 4000 rpm. You hear more motor than exhaust than before. I really like the results. It passed the wife test. I also want to try to do a A-B sound video but only if I am in the mood tomorrow,

Does it fit perfectly - not quite, When you insert the pipe into the Gator all the way up, the Silent Rider is higher up on the muffler than the images shown by Silent Rider, I am not sure if the JD exhaust is different than earlier when the designed but the silent naturally wants to install an angle, If you reduce the penetration in JD exhaust it will mount similar. Ideally the silence inlet pipe needs a slightly different angle so the silencer bolts parallel to the exhaust shield, If you lower it (less pipe into Gator pipe) it does drop lower but also the angle improves.

Since I did not feel much exhaust leak at the connection, I will likely drop it down some and bolt it in place, The muffler mounted bolts will hold it in place. The clamp does not provide much value.

Update: I did recheck the Silent Rider web site and looks like they have the clamp over the connection rather than around the neck. I will look at that.
If you notice the white mark on the silencer, the cargo bed when in the up position does hit the silencer heat shield. The interface is less than a 1/16-inch so not that much.

The pipe on the riding that inserts in the gator is not slotted so you have hard pipe over the JD pipe so the JD clamp really does not secure the pipes together like spark arrester on the stock Gator.


Silent Rider 825i image:
 

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Discussion Starter #2
Installed....

I ended up mounting it lower so the pipes do not overlap as much. I checked for leaks and could not detect it.

 

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Just got ours on Friday. :) Did a before and after going up our driveway. Its a lot quieter now. :):):) Have not put trailer on hitch yet (might need longer one). :(
 

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Discussion Starter #4
I have my hitch flipped compared to you but I do not have a ball. I use it for utility cart or a pull point with a rope to drag something.
 

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Discussion Starter #6
I have not noticed in power difference.
 

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Its all nice and dandy, but it would be awesome if someone had a muffler that would replace the existing one to perform the same act as adding the silent rider. The hitch is far enough under the exisiting muffler, and now you put on another and its almost covered up. I wonder if a Dynomax would have one for a car that would fit and do the same, but replace the existing muffler, or maybe right along the frame rail exiting out the back completly eliminating the muffler in the rear. Just a thought..
 

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Discussion Starter #8
JD makes one for $600 plus but did not find a better alternative.
 

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Just installed the Silent Rider and I really like it. But I too am trying to resolve the hitch issue. I may need to have one made that is long enough to clear the exhaust.

I was considering it before, anyways,because I have the back bumper and guards and my log splitter only clears it by 2". The receiver is is recessed back in there too far.
 

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Just installed the Silent Rider and I really like it. But I too am trying to resolve the hitch issue. I may need to have one made that is long enough to clear the exhaust.

I was considering it before, anyways,because I have the back bumper and guards and my log splitter only clears it by 2". The receiver is is recessed back in there too far.

I did install a 6" receiver extension just to help bring the hitch out. I know they offer longer ones, but I didn't want to come out too far because of the payload on the hitch.
 

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I also installed the silent rider. I haven't seen any performance difference. The only problem I have run into is hitting the heat shield and putting a nice crease in it when the box is fully lifted with the hydraulics.
 

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Discussion Starter #12
I also installed the silent rider. I haven't seen any performance difference. The only problem I have run into is hitting the heat shield and putting a nice crease in it when the box is fully lifted with the hydraulics.
If you look at my pic, you can see my crease on the left side (white spot).
 

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This thread seems to beg the basic question of why on a $11-12K machine JD apparently has not designed a OEM muffler that actually performs to a lower decibel level. As a new 625i owner I definitely noticed the louder exhaust note compared to a 1997 Kawasaki Mule with essentially the same engine...why deficient JD muffler?
 
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