Master cylinder options needed!

[pterodactyl]

I decided to give drag bars a try on my Gl500 but the master cylinder is at a angle. It also has dual rotors. I think MC's will interchange but the bore is what makes a difference. Dime City has a selection but they dont specify what they will work with. Input appreciated!

 

[speedfourjoe]

Here is a chart on bore size ratios: http://vintagebrake.com/mastercylinder.htm Once you know what size you need, a used sportbike master cylinder might be a good option.

 

[cxman]

i use these from david silver spares for the gl500 dual disc

it a 15.8 mm bore

http://www.davidsilverspares.com/GL500-DC-SILVERWING/part_160359/

 

[MotoMadness]

You need something arounf 16-17mm. Brembo makes alot of different OEM 16mm masters like that. Nissan makes a few also. I would stay away from the chinese stuff. Seen to many of them fail.

 

[pterodactyl]

Thanks for the good information!

 

[Hot500]

The bigger the bore the more power you can generate at the piston. The smaller the bore the more feel you will have at the lever.

I used a modern MS on my 500/4 from a Honda VTR1000 at 14mm. It is a good combination of both power and feel.