Topic: New master cylinder?

[Buffo]

I am going to buy a new front brake master cyliner but I really dont know which one I need. In the 2005 Dennis Kirk Catalog it has 2 different piston diameters for thier master cylinder pistons.  a .625 and a .55 (14mm).

Does it really matter what one I get?

Don

[kghost]

Yes, Depends on your set up.

Smaller piston = longer lever pull to displace the same amount of fluid.

Smaller piston = more pressure required on lever vs. larger piston.

With dual brake calipers in the front larger piston is better

Want less force requirement on the lever? Larger piston is better.

[Buffo]

less force is always nice...plus I would like to get ther double stoppers up front one day.


Thanks Kghost

Don

[Quail "Owner of the comfortable k8"]

Last month I rebuilt the M/cyl that was on my bike because it was a super clean unit, Not one speck of rust or any marks in the bore,  Then I found out it was off a 77.  I like everything oem so I found a 78 and rebuilt it.  If your looking for a real nice unit I will let it go for $60.00.