The front brakes on my (currently exploded) MC21 are in need of a rebuild. Sometimes they grab like they should, other times it seems like they're weak, then grab after I pull on the lever harder (almost like the pistons are sticking). This is undoubtedly taking away confidence on the track as well as the possibility of crashing me, so it must be fixed.

While the bike is down for a rebuild, I'm going to clean and rebuild the front calipers. What combination of parts have worked for everyone here? I'm looking for pads & lines, but if changing the discs is MUCH better I'll check that out. I thought these bikes had floating discs but it doesn't seem that way. Not looking to spend a pile of cash but will explore all options.

Thanks
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Craig
MC21 SP Rothmans
MC21 R fake Rothmans - track bike
MC21 SE R9N