Front calliper on Rear?...
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@HOTSHOT-III it’s a twin piston calliper I think. The ones that bolt together usually are...
The front m/cyl on the DTR125 is 14mm yes? I got one coming off of fleabay. Looks just like a standard rear but 14. Don’t know if the holes line up but will see!

I’m not sure if I can see the benefit of a bigger piston diameter on the slave, not when the pads are the same surface area on the front and rear?
I’m having trouble understanding where the beneficial ‘fulcrum’ is, if that makes any sense?! Where does it maximise PSI over a bigger surface area? That’s what brakes are about no? Plus added ‘leverage’ from a bigger diameter disc?
I’m really sorry if I’m not making sense! This is all new thinking to me
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