replacement rear shocks


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Skeldog
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replacement rear shocks

Post by Skeldog »



Well I see from previous posts that I'm sure not alone in trying to find alternatives to the factory shocks. I ordered a used left one from ebay and when it came in it was basically junk. luckily the seller refunded my money. and as others seem to be thinking I'd rather just replace both with a set of spring shocks and set them kind of hard for solo and take whatever they give when my wife is on. but that's quite a change in load so it might not be a good option. anyway the progressive's that are advertised on ebay interest me even though they are more expensive than I would like but someone posted that they were Harley specific and would not work on the 1500. maybe I need to try harder to locate a good left spring shock that is serviceable and retain my right air shock


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Re: replacement rear shocks

Post by WingAdmin »

It might be worth contacting Hagon shocks. Back when I was modifying my PC800, I needed some custom shocks. I talked with them and gave them the weight, length and travel specs I required, and they made the shocks to my specifications - and they were not too expensive. Hagon makes a set of shocks they sell for the GL1500, their part number is 34049SA
Skeldog
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Re: replacement rear shocks

Post by Skeldog »

Thanks for that tip- what I'm basically trying to do with this one is put this bike back into useable condition as cheaply as possible.at 73 I probably won't be riding a lot but I want to to be controllable and able to handle decently. I probably won't put 3,000 miles a year and don't try to lay it into the corners hard or push it like a lot of folks tend to do when they're younger.I've seen the 412's on ebay for around 350 and the seller claims they are a fit. probably that's about as expensive as I will go and if I can find something equal that fits at a lesser price I'll likely check them out.in fact if someone had a used set of the 412's they weren't happy with that weren't worn out I'd be interested on buying them if the price was right. I don't want to be stupid about using something that is not safe but at the same time trying to work on a fairly low budget. my air pump still works and the air shock does still hold air but I think the dampening is pretty well gone and I'd like to get that back. I found one set of aftermarket air shocks on ebay that sounded close but after messaging the seller and getting no reply- I expect either he is not trustworthy or not able to answer my questions about fit and the capacity of them so I would not want to purchase them even though they look like they would probably fit
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MikeB
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Re: replacement rear shocks

Post by MikeB »

If the right shock still holds air, it will work fine for you. It doesn't have any dampening because it is not really a shock. It's purpose in life is to adjust the height of the bike. The left shock is the dampener.

Finding Progressive 412's that will fit is a challenge. The shocks need to be 13.5 inches in length from eyelet to eyelet. Replacing the left shock and continue using the right shock is most likely the best all around scenario.

These are still listed on Ebay and one of these would be the way I would go if I were you:
https://www.ebay.com/itm/165213379841
https://www.ebay.com/itm/324935055190
MikeB
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Skeldog
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Re: replacement rear shocks

Post by Skeldog »

Well I finally heard back from the seller of the air shocks I saw on ebay but he wasn't very helpful. he just said please check the size chart and spring rate on the add, I did not feel at all confident that they would work out. I had previously ordered a used one from ebay and it had come in with damage to the spring from aparently running with the upper eye coming off the mount till there was significant wearing into the spring and the bushing worn to the point it fell out. I contacted him and he kindly refunded my money saying he had not looked at it before shipping. anyway I made a spring compressor and removed the spring from mine and it definitely had lost it's oil there was almost no dampening. I did the same with the one I purchased and the shock seemed to be good as far as that. so I was able to install my good spring and bushing into it and have it back on the bike.Thanks for the heads up about the right one not being a dampener but just an air lift. that gave me the incentive to go ahead with the fix.
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Re: replacement rear shocks

Post by schjas8078@gmail.com »

I just put on brand new Progressive 412 shocks. I have a 1993 GL1500 Interstate model. It had an "air" shock on the right side of the bike, standard/OEM. It had a fill valve that basically I would have had to put a basketball pump on the end of it to pump it up (my bike doesn't have an internal compressor). So, when I bought the bike used a few years ago, I never knew about how/what to do with it. I also believe that the shock was toast anyway when I bought it. The boot was mangled and destroyed to the point of no return. I could basically stand behind the trunk, and place my hand on top of the trunk and push down, ever so slightly - very little effort - and I could push the bike all the way down to where the shock/suspension would not go any further.
So this off-season (I'm in Minnesota...we don't ride during the winter...it's maintenance time!) I purchased and just installed the new shocks. I have no idea yet how they will function and perform, but I'm excited to find out!
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MikeB
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Re: replacement rear shocks

Post by MikeB »

schjas8078@gmail.com wrote: Wed Feb 09, 2022 12:31 pm I just put on brand new Progressive 412 shocks. I have a 1993 GL1500 Interstate model. It had an "air" shock on the right side of the bike, standard/OEM. It had a fill valve that basically I would have had to put a basketball pump on the end of it to pump it up (my bike doesn't have an internal compressor). So, when I bought the bike used a few years ago, I never knew about how/what to do with it. I also believe that the shock was toast anyway when I bought it. The boot was mangled and destroyed to the point of no return. I could basically stand behind the trunk, and place my hand on top of the trunk and push down, ever so slightly - very little effort - and I could push the bike all the way down to where the shock/suspension would not go any further.
So this off-season (I'm in Minnesota...we don't ride during the winter...it's maintenance time!) I purchased and just installed the new shocks. I have no idea yet how they will function and perform, but I'm excited to find out!
Where did you manage to find a brand new pair of Progressive 412 shocks?
MikeB
1998 - GL1500 w/184,500 miles ~ 2017 - GL1800 w/13000 miles
USAF Avionics Communications Tech - 1968 - 1986 / Flight Engineer C-130E - C-141B - 1986 - 1992. Retired
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Re: replacement rear shocks

Post by schjas8078@gmail.com »

Believe it or not, Progressive Shock's website:
https://www.progressivesuspension.com/p ... ies-shocks
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MikeB
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Re: replacement rear shocks

Post by MikeB »

schjas8078@gmail.com wrote: Wed Feb 09, 2022 1:52 pm Believe it or not, Progressive Shock's website:
https://www.progressivesuspension.com/p ... ies-shocks
Nice! From everything I have been reading it looked as though Progressive stopped manufacturing the 13.5" length shocks. There will no doubt be lots of GL1500 owners that will be happy to hear this.
MikeB
1998 - GL1500 w/184,500 miles ~ 2017 - GL1800 w/13000 miles
USAF Avionics Communications Tech - 1968 - 1986 / Flight Engineer C-130E - C-141B - 1986 - 1992. Retired
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schjas8078@gmail.com
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Re: replacement rear shocks

Post by schjas8078@gmail.com »

Mine worked and slipped on rather easily. The first side (I did the Right Side first) took a bit of coaxing, with my son coming out to assist for a few moments, but once I was able to get the shock in place and then slid on what I call the posts for each end, it was a rather simple job! :-) Can't wait to take it out on the road and see how she rides now!
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Re: replacement rear shocks

Post by Solo So Long »

schjas8078@gmail.com wrote: Thu Feb 10, 2022 7:18 am The first side (I did the Right Side first) took a bit of coaxing
A trick that I was taught, years ago, was to take a new shock, put a ratchet strap around it (the long way), then put some weight on it to compress it an inch or so. Tighten the straps to hold it at that length. Once installed, remove the strap.

This eliminates a lot of frustration with shocks that are slightly longer than the travel when mounted.
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Re: replacement rear shocks

Post by schjas8078@gmail.com »

Oh sure...NOW you tell me. :-) LOL.
I used a screwdriver to kind of jerry rig it down the 1/4" I needed to get it on the post.... it worked well enough. There may have been a few 4-letter words spouting out once or twice, but I got it on there! :-) LOL

Thanks though, for this advice for others when they go to do theirs. It will save them the frustration! :-)


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