I bought mine at the (a) Yamaha bike shop. It improved the gearing to speed ratio. I also bought a smaller rear sprocket, but haven't fitted it yet. With the original ratio's I was often in top gear by 60km/h, and looking for a taller gear by 80. Now I don't need to go searching the box for another gear after I get passed 70. Top speed is irrelevant. It will still do 110km/h comfortably.Where would I find a 17-tooth front sprocket for a 2020 Vstar 250? Would the chain still fit after installing the sprocket?