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I used all of the OEM parts metal washers on top and bottom. I dont know what CJM instructions are for mounting as I did not buy them new. I tried to mock them up with the round metal disk sitting on the triple tree but did not believe they are designed to rest on two small points like that. I did pull the 4 rubber pieces from the OEM risers and installed them into the CJM risers. This all provided a snug fit with no gap. Im no engineer but this seemed to be the most logical way to install. I did not have any gap on the stock set up as you do. Maybe some else can chime in about that. I guess someone could call CJM to get a clear answer. Seems the mounting instructions would be a bit more specific. 🤷🏼♂️
Interesting, I'm with you 🤷🏼♂️, probably fine with or without gap. Thanks for the reply and info, much appreciated.
When I installed the set on my scoot I have the gap as well. The OE risers have 4 rubber nubs on the bottom of them where they rest against the top tree which would compress as they are tightened down. I noticed there are 4 bumps machined into the bottom of the CJM risers to, I assume, mimic the OE rubber nubs which would not compress hence leaving the small gap over the OE risers. The CJM parts appear to be working as designed.
I assume you know that when you quote someone, you can remove certain parts of text and images, then we don't always have to see the same pictures over and over again
When I installed the set on my scoot I have the gap as well. The OE risers have 4 rubber nubs on the bottom of them where they rest against the top tree which would compress as they are tightened down. I noticed there are 4 bumps machined into the bottom of the CJM risers to, I assume, mimic the OE rubber nubs which would not compress hence leaving the small gap over the OE risers. The CJM parts appear to be working as designed.
Im not sure how I can make this clearer without pictures and Im not going to remove them to take pictures.
There are 4 recessed holes on each riser machined into what is the bottom of the risers. The rubber pieces from the OEM risers need to be removed and inserted into the appropriate holes on the bottom of the CJM risers where the 4 recessed holes are. The 4 machined bumps which is the top of the risers will fit perfectly into the holes vacated by the rubber pieces to create a flush fit.
To each his own but I believe a flush fit is what CJM was going for. I dont believe the only contact point for the bottom of the risers are supposed to rest on 4 1/4 inch machined bumps.
There are 4 recessed holes on each riser machined into what is the bottom of the risers. The rubber pieces from the OEM risers need to be removed and inserted into the appropriate holes on the bottom of the CJM risers where the 4 recessed holes are. The 4 machined bumps which is the top of the risers will fit perfectly into the holes vacated by the rubber pieces to create a flush fit........
To each his own but I believe a flush fit is what CJM was going for. I dont believe the only contact point for the bottom of the risers are supposed to rest on 4 1/4 inch machined bumps.
I have mine installed just as you have described and have gap present. I believe you are correct about order of install, but gap may or may not be present. I think this may be down to the rubber compression and age of the rubber isolators.
Here is a pic from Bitchin Seat store website that shows gap as well on there product. BSC 3" from their website
Again no disrespect intended, just good discussion, thanks eveybody.
I have mine installed just as you have described and have gap present. I believe you are correct about order of install, but gap may or may not be present. I think this may be down to the rubber compression and age of the rubber isolators.
Here is a pic from Bitchin Seat store website that shows gap as well on there product. BSC 3" from their website
Again no disrespect intended, just good discussion, thanks eveybody.
None taken!! Im not familiar with the BSC risers and if they require the same installation of the rubber pieces etc.
I would love to see some pictures of the stock risers and if they sit flush or not. I believe mine were flush from the factory.
The OE risers would sit more flush because of the rubber nubs on the bottom on the riser where as the CJM unit has hard machined nubs on the bottom. The rubber nubs on the OE unit would allow the riser to compress a bit more.
Ninja edit.....................unless I have it all backwards. I placed the 4 machined nubs down as were the 4 rubber nubs on the OE risers. It appeared the holes on the top of the CJM risers aligned with the OE risers.
Ninja edit #2........I sent CJM a request for installation verification with a link to this thread.
The OE risers would sit more flush because of the rubber nubs on the bottom on the riser where as the CJM unit has hard machined nubs on the bottom. The rubber nubs on the OE unit would allow the riser to compress a bit more.
Ninja edit.....................unless I have it all backwards. I placed the 4 machined nubs down as were the 4 rubber nubs on the OE risers. It appeared the holes on the top of the CJM risers aligned with the OE risers.
Ninja edit #2........I sent CJM a request for installation verification with a link to this thread.
Interested to see what they say. I believe you have it backwards but I could be wrong.
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