As the title says wondering if anybody else has done a conversion. Hey just ordered my kit I was told it would it would be a noticeable difference. I pretty much do 80% of track riding and hard canyon riding here in so cal, 6600 miles and my sprockets and chain where done.
I did this on my CBR929RR (Fireblade) and...noticed no difference. But hey, that's just me. It didn't hurt anything either, so if your chain and sprockets are already toast, why not give the 520 conversion a try? For what it is worth, the THEORY is it should be lighter reciprocating mass so it should enable quicker/easier acceleration but it was more theoretical than showing up in reality for me.
What was noticeable was when I tried Michelin Pilot Pure tires "back when". They were lighter than regular tires and I could actually feel that in the corners, at speed. It was interesting. But one track day on those tires and they lost their grip! Weird. Sad. Unacceptable. But the 'lighter tire' theory did prove out in the real world. You never know until you try stuff. Report back once you get the 520 kit installed and let us know what you think.
Yes I did about 1500 miles back and well worth it. Less unsprung weight to spin. I did stock size steel vortex front, Renthal aluminum hardened rear +1 and a DID 520 racing chain. I used the same chain many times on my 2011 GSX-R1000 race bike no issues it's plenty strong.