Just picked up a 2012 EC 300. I am also suffering from the spongy front brake, as well as a little bit of front brake drag. I can easily grab the front all the way to the bar.
- Installed new pads
- Bled System, conventional and reverse
- Hung caliper overnight
- Zip tied lever to bar overnight
- Lever Adjustment screw has play and allows plunger to fully decompress
I checked the caliper pistons, they look clean with no corrosion. I did not pull them out of the caliper, but that might be next. One piston extends faster than the other, and requires me to push on the "good" piston while pumping to force the other one all the way out. Normal? They retract back slightly when off the lever. They take some force to push back in.
Can't find any leaks. My next step is to replace the brake switch banjo with a regular one.
Does anyone by chance know what master cylinder rebuild and brake caliper rebuild kits fit? Also might need a brake line.
I have a WR250R with the dual piston Nissin brakes and holy hell are they powerful compared to the GasGas!
Edit: Looks like I have a Nissin 11mm, and the 2005 Honda CR450 M/C rebuild kit will fit. Does anyone know what fits for the caliper rebuild?
Last edited by ReaptheHeat; 07-29-2018 at 07:28 PM.
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