Need caliper pistons

[LuckyEddie]

Greetings,

The front brake caliper pistons are shot on my 1980 XS1100LG. Someone in the past must have figgured that they come out using a pipe wrench and carnage has insued.
They measure 43mm across and 33mm deep.
Is there a source for these? Or will I have to have them made.

[xszgrider]

Need a rear caliper piston

I just sat down to post the same identical question. However, I need a rear caliper piston.

I have 1980 XS1100G. My piston has a diameter of 38.25mm and a height of 41.25mm.

I would appreciate any help.
Thanks

[bikerphil]

special caliper pistons

I'm pretty sure the pistons for the Special calipers are unavailable, mabye Yamaha still carries them. Might want to keep an eye out for a used set of calipers. They go for pretty cheap on eBay, or mabye member Andreas can hook you up. The Standard pistons and the Special rear pistons are still available aftermarket, but won't fit the front of the Special. Here's a source for the Standard piston, also fits the Special rear thru 1980...

https://www.partsnmore.com/cat_index...tegory=chassis