Master cylinder for rear brake

[jimmib]

Almost done with a 2003 Ultra Classic conversion. I used a DNA rear which has their 4 piston calipers. I can't get a good pedal. I have bled and bled, no air in system. I don't think the stock master cylinder has enough volume. Has anyone run into this problem? Any suggestions on a replacement master cylinder?

[cscsonny]

Have you bled it at the master cylinder ? Could still have air on that end.

[Rsw]

What size is it?

[Gorilla]

the Performance Machine replacement master cylinder for trikes is 3/4 it works.

[jimmib]

Cscsonny, yes I have bled master and caliper quite a few times.
Rsw, it's stock Harley master. Don't know the bore size, have heard they are 11/16.
The problem is, the first time you push pedal, it goes all way to bottom and then second push, you have a fair pedal (not great) about half.
Thanks Gorrilla

[scooterfxr]

Almost done with a 2003 Ultra Classic conversion. I used a DNA rear which has their 4 piston calipers. I can't get a good pedal. I have bled and bled, no air in system. I don't think the stock master cylinder has enough volume. Has anyone run into this problem? Any suggestions on a replacement master cylinder?

hope you got the master figured out I just purchased a kit still in route The kit doesnot come with rear brake lines .What did you use thanks

[AmericanMan]

hope you got the master figured out I just purchased a kit still in route The kit doesnot come with rear brake lines .What did you use thanks

I used the brake lines for a triglide. I have an 03 road king.

[rhino 2]

I used the brake lines for a triglide. I have an 03 road king.

Chad............Welcome to Trike-Talk.................

[C Dog]

I used the brake lines for a triglide. I have an 03 road king.

No luck finding that. Anybody have a source?