New stainless are available from various sources but the original pistons are not and they do pit. At least they were on all 3 of mine. I found replacements on Ebay it kits that came with everything needed. I also like to use red rubber grease when reassembling everything. The real key to these brakes is to make sure to completely purge and replace the brake fluid at least every 3 years. It is more often neglected because when the bike is running good why bother.
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2 - 80 LGs bought one new
81 LH
02 FXSTB Nighttrain
22 FLTRK Road Glide Limited
Jim -
Its probably been at least 5 years since I purged the brake fluid from the brakes and the white contamination crud shows on the left side looking towards the front. Nothing on the other side.Last edited by oldyam80sg; Yesterday, 04:48 PM.1980 XS1100 SG
Inline fuel filters
New wires in old coils-outer spark plugs
160 mph speedometer mod
Kerker Exhaust
xschop K & N air filter setup
Dynojet Recalibration kit
1999 Kawasaki ZRX1100
1997 Jeep Cherokee 4.5"lift installedComment
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I remember some time back you were running just one caliper up front if I am not mistaken.2H7 (79) owned since '89
3H3 owned since '06
07 Triumph Tiger 1050 (night rider)
"If it ain't broke, modify it"
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Pete, here is a kit for your bike. Yamaha XS1100 1980 brake piston seals. At the bottom of the page it shows a kit for the rear. If you do one I would do them all as well as changing the fluids. The kits even include the red rubber grease. Another source obviously is Ebay, HVCcycle and the old bike barn. By the way for everyone else following this thread the original calipers were actually chrome plated steel which over time and exposure to moisture absorbed by the brake fluid degrades the chrome and pits form. If you are looking on Ebay they are listed as brakemasters which is the name on the decal in the first picture for powerhouse. They are located in the UK so the shipping will be a bit more but they are excellent kits. I have used them for two of my bikes.Last edited by cajun31; Yesterday, 07:39 PM.2 - 80 LGs bought one new
81 LH
02 FXSTB Nighttrain
22 FLTRK Road Glide Limited
JimComment
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Last edited by oldyam80sg; Today, 03:06 AM.1980 XS1100 SG
Inline fuel filters
New wires in old coils-outer spark plugs
160 mph speedometer mod
Kerker Exhaust
xschop K & N air filter setup
Dynojet Recalibration kit
1999 Kawasaki ZRX1100
1997 Jeep Cherokee 4.5"lift installedComment
Comment