I have an OEM Brembo Radial Master Cylinder that I took off my 2007 Aprilia RSVR Factory at <1000 miles. This master cylinder works very well with GSXR Tokico twin calipers. We all know the OEM master cylinder on GSXR sucks, and this is waaaaay better. Not spongy, very good feel, good power. So why spend $230 on an aftermarket Brembo radial master cylinder? It is really not much (if any) better. And then have to pay MORE money for a reservoir kit? Here is the deal: $140 shipped to lower 48 states. Marc Rittner [email protected]