I've had 2 GRmoto end cans.
1 on my last K1300S , and one currently on my Speed Triple 1050 RS ( took the Arrow underseat exhaust off)
I had , and have no issue with them, easy to fit, and last pretty well.
I'm actually, as we speak , thinking about taking the Akra off my Motorsport and fitting a GR.
Think the Akra is large and ugly !