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mr roper

Active Member
New Progressive 412-4215C shocks and 11-1126 fork springs to be installed soon.
 

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Excellent choice. Just a reminder. Notice where the oil level is in your front forks with the stock springs in place. After changing the springs, refill to that level. The amount of oil will be different.

When you make the changes, you won't think it is the same bike.
 
It has been several years, nine to be specific, since I installed mine. I don't remember how long I cut the spacers. Ideally, it will depend on your weight. It seems to me that the instructions gave starting point; but I don't remember what it was. I would suggest that you call them and ask.
 
Thanks. I'm sure I'll figure it out. When I take things apart, maybe looking over and measuring the stock spring and spacer will help.
 
Didn't Rocky just do this job?

Maybe he mentions spacer length in his thread on it? If not, he may come along and offer his advice.

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Yes I did.
I didn't find the instructions confusing, but you need to read them carefully - and maybe more than once to fully understand them.
I filled the forks with oil to the level stated (140mm {5.5"] ) measured from the top with the fork leg completely compressed. The illustration in the instructions shows this pretty clearly. I went with 10w fork oil.
The sheet included specifies that the spacers for the T100 are cut to 3".
I also installed Ikon shocks while I was at it and it all went back together very easily.
If spring ever gets here, I'm anxious to see how the bike feels now.
 
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Rocky,
There must have been a change for 2008 (mine's 2012) because the chart says 3" for 2001-2007 and that the length needs to be calculated for the 2008. I'll figure it out. Also I found good info in the thread on setting static sag.

Ed
 
Rocky,
There must have been a change for 2008 (mine's 2013) because the chart says 3" for 2001-2007 and that the length needs to be calculated for the 2008. I'll figure it out. Also I found good info in the thread on setting static sag.

Ed

Hmmm, that's interesting. Now I understand your question better about the spacer. Funny that the spring instructions haven't been updated. Maybe they think that owners with later machines won't be changing the springs so soon.
I haven't had cause to look at later suspensions so I don't know what or if there were any changes.
Just FYI, when I fitted the 3" spacer it was a little proud of the fork leg (as it should be) before I put the fork cap on. It only took mild pressure to compress the spring and catch the threads. This is best done with the fork leg in a padded vice. Be careful, use a socket wrench to turn the cap while pressing squarely down, and watch that you don't get it cross-threaded.
Good luck with your calculations for the spacer.
Let us know how it goes.
 
on my 2012 bonnie at 175 lb i found the forks to be good but the shocks hit pretty hard, after research i went with Bitubo WME's a DeCarbon shock of great quality herdan.com a dealer in port clinton pa usa actully affiliated with Hermy's Triumph-Bmw where i bought my bike. very pleased with the ride!
 
I put the Progressive 412s on today. I'll wait a little to do the fork springs. You know, one change at a time.
 

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I put the Progressive 412s on today. I'll wait a little to do the fork springs. You know, one change at a time.


Look forward to your comments on the back end.
Way to go "one change at a time", so many people don't get this concept and end up running around in circles.
 
I put the Progressive 412s on today. I'll wait a little to do the fork springs. You know, one change at a time.

I agree 100% - one change at a time.

I am interested in your report. I did just the opposite. I first replaced the springs in my forks and later replaced the rear shocks. The springs in the front made a huse difference. I did not notice as dramatic of a difference when I replaced the rear shocks.
 
I got to ride a bit yesterday and I'd say these shocks are an improvement over stock for my riding style which at my age is more conservative than it used to be. These are not "performance" shocks. Progressive calls them "cruiser" but they're well worth the money as an upgrade to the stock ones. BTW the dampers are marked Gabriel and made in Mexico so maybe "assembled" in US not made in US. A bargain from Dennis Kirk.
 

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