Cheers for the input guys, much appreciated
I never thought to check the rear pads to be honest, I was pretty sure there was plenty of meat on them, but it makes sense if there isnt and it kinda welded together.
Also I thought with the rear calliper paint all being cracked I assumed that it may have had brake fluid all over it yet I couldnt see any evidence of this, your suggestion of heat cracking the paint makes perfect sense
I am pretty mechanically minded zzr lon
and recently did this to the Zed's front brakes as only one piston was working in the callipers
Thats how it is now, gonna give the pistons a good clean and get some red rubber grease behind the seals and reassemble, should be problem solved then, I was getting a lot of juddering from the front and when I saw only one piston working I decided I would strip the front callipers.
What I really wanted to know was if there was a performance upgrade for the rear calliper ? see on the front I have as follows :
99 Fireblade Nissin Callipers
01 Yamaha R1 Master Cylinder
01 Yamaha R1 Reservoir
01 Yamaha R1 5-span Adjuster Lever
The original master cylinder was rubbish, we would bleed it and it would be ok.. for 24hrs then spongy again next day so we junked all the standard system and went first class, am gonna be the first to take pics of a 200kg ZZ-R doin a vertical stoppy
So the fact that I upgraded the front, can I say put on a R1 rear brake calliper or keep it Nissin and get a Blade one ? or is my only option to rebuild the original master cylinder with a seal kit and get a new rear calliper ?
Cheers again guys.