Front master cylinder size

[Dusterdude]

By reading my manual,it appears the gl1100 is 15mm in bore size,if thats true,would it hurt to replace it with a 14mm master cylinder?thanks

 

[dan filipi]

Not sure on that other than when I put a rear master cylinder on that was smaller, it couldn't pump enough quantity of fluid to be useable. I went a larger MC which pumps more fluid than stock which brought the pedal up higher when under pressure.

 

[zman]

I used a Chinese built front master that is a little smaller , no problem here... it was 14MM is the common size for front M/C`s from china, there are a few sellers selling the 15-or 16 MM ones from China but are usually 50 and up, I paid 15 bucks for mine.
Here`s the type I bought, got the extra seal with mine but didnt get the extra switch this one includes, my switch failes in a matter of weeks but the M/C itself is doing fine.
https://www.ebay.com/itm/Front-Brake-Mas ... 4f&vxp=mtr

 

[Dusterdude]

Groovy,thanks z

 

[joedrum]

wow that looked ok for the money

 

[Ansimp]

Dusterdude » Mon Jun 29, 2015 5:32 am[/url]":h5lfhv90]
By reading my manual,it appears the gl1100 is 15mm in bore size,if thats true,would it hurt to replace it with a 14mm master cylinder?thanks

As long as you don't have a linked system in my experience you will have more brake pressure with a smaller mc bore diameter ( currently running a 12.7mm CBR mc)

 

[Dusterdude]

Mine is not linked

 

[Ansimp]

Dusterdude » Mon Jun 29, 2015 7:54 am[/url]":2iy8556x]
Mine is not linked

Hopefully I answered you question correctly. 14mm will work great providing it is good quality ( my CBR one is used honda from my collection)

CBR Front master cylinder and aftermarket mirror

• Ansimp
• Mar 12, 2014

 

[Dusterdude]

You sure did,appreciate it