The rear brakes on my 300EX are weak. I put new pads on but no help. You rally have to put ALOT of presure down to get them to work. Can someone piont me in the right direction?

 

Have you bled the rear brake? air trapped in the line will give a weak,spongey feeling brake pedal. A bad line will ballon in a weak spot,and take all the pressure away from the caliper. I can lock the rear on my son's 300ex with a toe tap,so yours must have a problem some where. Did you check the level in the resivoir? it is right by the pipe on the right side,I have heard of heat damage on some,maybe the pipe got something too hot,and it is leaking.Just a few things to look at.

 

I'm not sure it's that big of a problem because for myself, I prefer the weaker brakes, especially in the rear so it's not locking up on me and moving from side to side.

 

I have bleed the rear brakes. I'm begining to think the rear master might need rebuilt. Will check the lines tomorrow. Thank you for the tips.

 

I know you probly don't want to go this route but it's woth me suggesting it. Why not spend $40 and get a steel braided brake line for the rear? When you use the brakes front or rear the rubber lines expand and you lose some fluid pressure. I'm going to the steel lines this winter when I completely go through my quad again. That's just me though.