#2 PostAuthor: lta01 » Wed Sep 09, 2009 9:07 pm
Z power do them, and I'm pretty sure that there are some generic copies available through the bike trade. Some come with the seal, think £20-odd quid a piston from memory.
Alternatively, there is a guy called Mark Copley who advertises in the VJMC white book , he's in Yeovil , and he will make you replicas in stainless, for £15 each plus postage. You send him the old ones, he sends back lovely new ones a couple of weeks later. ( I'll try to find his contact details if some else doesn't beat me to it )
I've used him on most bikes I've restored, and he does a good job. He does NOT polish the pistons, just fine mills them. It tends to make pistons a little slower to move out and take up pad wear, so lever travel becomes a bit longer, then one day the piston travels far enough to slide on the seal, and lever is back at full firm. Alternative is every 3 months, take caliper off, pump lever once, ease caliper back on , job done. worth every penny to avoid ever having to replace them again. Don't forget to clean out the caliper groove fully, I use a brass radial brush in a dremel....gently.
He who dies with the most toys wins .
or does someone sell generic pistons; obviopulsy they need to be same size;
