2006 Street Glide Front Brakes

[simpmarv]

Hi All,
New member here.
I recently purchased a used 2006 Street Glide.
The guy who owned it before me did a lot of half assed modifications.
So I'm working on the front brakes. They are very had to pull and don't really stop the bike. It has been converted to a single disc brake with a 21" front wheel. I'm told the master cylinder isn't for a single disc brake system. I want to convert it back to dual brakes. Rotor ordered and installed. Second caliper and new brake line ordered. When I received them, the existing caliper is different. I figured out the caliper was from a 2008 and new Street Glide. So I ordered the correct caliper. I also determined that the master cylinder is also from a 2008 and newer. After replacing the existing caliper and bleeding the brakes, I now have very soft brakes that will eventually grab but they do not release properly. They continue to drag.
My questions is do I need to change the master cylinder to the 2006 design also or will the 2008 and newer work?

 

[danoday]

Hi All,
New member here.
I recently purchased a used 2006 Street Glide.
The guy who owned it before me did a lot of half assed modifications.
So I'm working on the front brakes. They are very had to pull and don't really stop the bike. It has been converted to a single disc brake with a 21" front wheel. I'm told the master cylinder isn't for a single disc brake system. I want to convert it back to dual brakes. Rotor ordered and installed. Second caliper and new brake line ordered. When I received them, the existing caliper is different. I figured out the caliper was from a 2008 and new Street Glide. So I ordered the correct caliper. I also determined that the master cylinder is also from a 2008 and newer. After replacing the existing caliper and bleeding the brakes, I now have very soft brakes that will eventually grab but they do not release properly. They continue to drag.
My questions is do I need to change the master cylinder to the 2006 design also or will the 2008 and newer work?

Disclaimer- I have never done a brake conversion on a SG. So my opinion is general mechanics.
Single rotor to dual rotor swap either means more fluid to the calipers or more pressure or both. I would probably make sure the hand brake/reservoir assy supports dual calipers volumetrically (fluid capacity ) and you have the appropriate size brake lines. To large of a line may cavitate the reservoir and to small a line won't actuate the brake calipers. Just my thoughts.

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