syscast got make the clutch upgrade kit
BUT
the main problem with syscast products are quality
their die cast stuffs are made of low quality aluminum and the machining is not accurate at all, thats why many times u get problems getting the right fit for the clutch casing they make, have to grind down a bit our self.
There is 1 case i know that happen where the crankcase bent when he use the syscast kit.
The handclutch upgrade kit sold by Yamaha Thailand has an extension aluminum plate because the crank is longer for malaysian model.
Also a few other parts u have to exchange . Its all in the kit, just plug and play. There are quite a few parts to change, just make sure each one is used.