Replacing Rear Disc 1050 Speed Triple

Can anyone identify the model year for the rear of my T509 please? It was last mot'd in 2008 and when I took it yesterday for a new one the examiner laughed at the brake performance.
It's been modified with a later 1050 swinger etc.
The disc diameter is 220mm.
Thinking of using a Brembo disc unless anyone can suggest other.
Any help appreciated.

Cheers
Nigel

 

Disc is off the bike, just a case of removing the four bolts and a little jiggling and off it came. Hex bolt heads are a bit plastic so new set required.

 

Thanks for info, it's costly to convert to sprint set up so will stick with the 220 disc.

 

Disc is the same part number from the t595 to the speed triples of 2010 then.

Looks like I'm sorted.

Thanks
Nigel