So finally bought the chain tool and also received the DID ERS3 chain. For me, the stock chain strength for 125 is overkill and I will try to ride with this lightweight chain instead. Its racing chain, so it needs more care for sure, but the best part is that its around 0.5kg lighter. As its pure rotating mass, the weight saving is even more important. As I had the SuperSprox lightweight front sprocket also ordered last year, it was time to put it on also. The quality is superb as expected. I also modified the stock sprocket cover for more naked type. Really happy how it all turned out!
