I've just upgraded mine to a Brembo radial master cylinder with GSXR1000 K8 radial calipers (I've got the GSXR750 K4 up-side-down front end on).

I haven't had a chance to test it yet as I'm still in the process of putting it back together, getting it ready for racing next season

As soon as its finished, I'll post some pics

 

My race bike has a cable set up.

-MS

 

For your brakes?

 

I have Brembo radial 19x20 Master cylinder and basicly they are the best money can buy

Thats why most BSB and BSS riders use them

 

So for a race application, would you guys go with a 19X20 or 19X18 for stock calipers?

Thanks for your help!

 

It is all in what you prefer. 19X18 gives a little bit softer lever and bit more of a progressive feel. 19X20 gives a stiffer lever and snappier brake feel. I know people who use both and love them. We even swapped one around on my friends GSX-R at the track. We had two fulls sets of brakes calipers, masters and lines ready to go so the swap was easy. He liked the 19X18 better. I did the same thing and like the 19X20 better. I would nudge you towards the 19X20 for race application though.

-MS

 

I've the stock master cylinder with GSXR1000 K8 radial calipers (I've got the USD fork front end on). I tested it on the street and at the track, (Buttonwillow, Mosport and Calabogie). I do not feel any need to upgrade the master.
Great feel, lots of power, no fade.
In fact, I had the radial master that came with the GSXR front end but could not make it fit with the throttle cables and the fairing, not without getting longer throttle cables.

 

Has anyone replaced the OEM master with a cast master resevoir version (common on Hondas) to rid the plastic tupperware cup of brake fluid?

 

Same as on the naked sv too

 

I like the urine cup on my handle bars!!!:shifty:

 

Went with the 19X20. Had to install a new starter switch cause the stock one was too big and got in the way.