So last season was my first and under track conditions the seals I built my calipers with (powerhouse) from ebay turned out to be shocking. I came to this conclusion after attempting to find them again on ebay and then calling the company directly to ask if they still sell them. No sir, we pulled them from production as several people complained about the system overheating and causing issues, I explained that this was the situation I was having to which the directed me to OEM seals which triumph have seemed to price at a vomit inducing £140. I firstly thought it may have been my discs had been warped and was planning on buying a new set or the seals had just accrued too much dirt and I was replacing them anyway! alas it turns out it was the seals failing or doing their job too well whichever you may decide as it took almost 80psi to remove some of the pistons! so I'm currently looking into options and reading some forum post and I came across this so has anyone ever done this or similar? They'd be genuine Honda Nissin seals and half the price? you'll laugh when you find out what bike they're from. Below is the extract I pulled from a very dated thread I found out another one: the Daytona '09 Nissin monoblock caliper seals cost an arm and a leg. about 64 euro a set (per caliper that is, at Worldoftriumph.com). At triumph the '09 onwards have a different part number then pre '09. I took the caliper apart and tried matching with Honda seals, which are Nissin parts. The following fit perfectly and are exactly the same size: 45109-MA7-006: dust seal ring 45209-MA7-006: pressure seal ring These work out cheaper AND you can buy them per piece. About 48 euro for a full kit, compared to 128 euro at Triumph. Maybe there's a kit for the Honda, which can work out even cheaper... I've tried to confirm if these are correct but I'm not in a situation to measure my current ones as I'm not at home if and when I do I'll update this thread and in the meantime if anyone can help out it would be much appreciated.