Hello all my 2012 cvo rg has progressive hd springs in the front and it rides like trash it’s really stiff but it has bottomed out either way somethings not right. I want to buy springs that are slight stiffer than stock so Does anyone know the factory spring rate in the front forks?

 

Have you ever changed fork oil? Old dirty fork oil can have an adverse effect on the stock front end. I run a 50/50 mix of type e fork oil and Screamin Eagle fork oil and change it every two years. My front end no longer bottoms out and the ride quality, especially when two up, is better. It’s an economic improvement to the stock front end.

 

The problem is that progressive HD spring are way too heavy for about anything except for a guy that weights over 300 lbs and packs a similar weight ol' lady..

I've not worked wit the 09 to 13 (14?) bagger forks but the stock 07 EG springs are about 36/90.. The progressive HDs are 50/80 for regular and 60/90 for heavy (IIRC)

The progressive spring were designed for a bike that does not have a good compression damping valve like the later baggers.

 

the 09-13s have a 41mm fork that looks identical to your 07 Id bet they are close

 

Hd originally went to the cartridge emulator in 2006 and the parts were the same until 2008.. I've messed pretty extensively with the forks on my 07 EGC and found a combo that works real well for me. It basically RT 1.0 kg/mm springs, 5wt fork oil, the stock emulator with low speed hole drilled out to 7/64" and about 35mm pf preload. I weight about 185 and always ride solo. I don't know how well that will work in the 09 to 13 forks since the damping rod and emulator changed. I spent a few builds trying to get a pair of RT emulators to work but the current setup has been better.

The big issue seemed to be rebound from the damping tubes. I had an 02 RK that I added the emulators to and 15 wt oil and it worked real well .. I don't know what changes occurred to the 09-13 damper rod and emulator.

Add:
You could try the progressive regulars or RT 1.0 springs and mess with the preload. The progressive regular spring are still stiffer than the RTs.

 

As much as I prefer single rate springs I’ve been in contact with rt a few times, the person now in charge of sales is terrible at returning calls and doesn’t seem very knowledgeable about the products they sell. She wanted to sell me 1.20 kg/mm springs. Good for racing not so good for touring. I’m going to try the standard duty progressive springs for now I guess

 

Does RT have 1.2kg/mm springs that fit a 41mm fork?

When I first got my 07 EGC, the owner had installed progressive heavy. I did go to regulars and it was an improvement.

 

You could use the Progressive Monotubes in the front. I have them on my 01 Electra glide and they are really good. Should be able to get them for under $500 and they are a simple drop in. I have them teamed up with the 944's in the rear and the old bike rides and handles great.

 

What's the spring rate on monotubes?

 

The very definition of under dampened and over sprung.