I'm having a problem with my 2011 Ds 450 XXC rear brake pedal pushing completely down to the stop without building much pressure. This started occurring after replacing a faulty rear brake pressure switch. The entire system has been bled multiple times by hand and with a pressure bleeder. Pedal still sinks. I took the master cylinder off and apart expecting the o-rings inside to need replacing. It looks like one of the o-rings is shot. When I looked for a rebuild kit I was unable to find anything...what a surprise. That would be too easy, right?! BRP does have a "rebuild kit" that includes only about half of the serviceable parts... Its called a "rod set". As far as I know, the brake systems on the DS quads are from Wilwood. I contacted Wilwood to see if I could get the o-rings for the piston inside of the master cylinder. I was told that due to their contract/s with BRP, they cannot sell parts for OEM applications such as this one. This means the only way to get a new master cylinder piston/o-rings is to buy a new complete master cylinder assembly for $209.99 (current pricing)
Does anyone know of a better solution to this problem that would cost less than 200 bucks? I know some people have converted to TRX systems etc. but that seems like too much trouble for me. I like the stock system, but don't understand why service parts are so difficult to come by. Obviously these quads are rare, but if I can find rebuild kits by All Balls for KTM quads etc., I don't see any reason it should be this hard to find parts for such a common issue on a DS.
HELP!!! Thanks!!!
