Front Disk Question

[GTGS]

I noticed after I purchased my 81 GS550L that the front brakes pulsed under braking. I assume it's a warped disc. I found a slotted disk up for sale from an 83' and was wondering if it would fit? I looked up the drawings on the bike bandit website and they have different numbers. Anyone have any ideas?

[hampshirehog]

For the UK bikes they will fit fine as a straight swap and I suspect the same will apply to yours as well.

[Guest]

I've got lot's of rotors.

[waterman]

Just remember to purchase a rotor off of a bike with a single front disk, the dual setups use smaller diameter disks. Not sure but guessing that the 83 550 L was a single disk bike so it should bolt right up to your 81.

[Steve]

Before you go spending a bunch of money and doing a bunch of work, try cleaning the disk VERY WELL.
You might simply have a greasy spot on it that affects the available friction.

.

[mwootto]

whats the best way to clean the disc?

[duaneage]

I use 100 grit sandpaper on a block of wood and then degrease it with brake cleaner spray.

If you take it off and place on a counter top (don't let the wife catch you) you will see if it is warped or not.
I have a rotor from a 650L that is probably the same, let me know if you need one.

[GTGS]

Anybody have a front rotor for a 550L they want to part with? Mine is pretty warped. Let me know if you have one and what you want for it.

[Steve]

Anybody have a front rotor for a 550L they want to part with? Mine is pretty warped. Let me know if you have one and what you want for it.

Did you bother to read the post directly above yours?

... I have a rotor from a 650L that is probably the same, let me know if you need one.

.