On Tue, 9 Jan 2018 20:44:47 -0000 (UTC), Mad Roger
wrote:

On Mon, 08 Jan 2018 21:56:58 -0500,
Clare Snyder wrote:

Don't know about the USA but almost impossible to source the rubber
parts kits here in Canada - and cyls are stupidly cheap compared to
what they used to be. (labor to rebuild costs as much as a cyl if you
are paying to have it done)

At a hundred bucks each, I wouldn't call cylinders "stupidly cheap".

Called the local Toyota dealer, who said the cylinders are $102 each, and
the brake shoes are $157 for a set of four, so that's about $400 with tax.

Toyota doesn't sell a rebuild/repair kit for the rear brake cylinders.

I'll look around for better parts although I need to know the friction
ratings to compare shoes apples to apples.
You do not need to know the ratings - just buy "oem replacement" -
they WILL be the right stuff. (there are cheaper qualities available -
usually sold as "economy") Premium shoes and oem replacement will
both be VERY close toidentical. In almost 50yuears as a mechanic
Inever once had to "match" friction materials for "stock" brake
replacement.