It's light, but I'm afraid of its durability...
I installed it on YAMAHA's YZF-R25
Since I made it 415Conversion, I also replaced Sprocket.
415Size is not so much sold here Manufacturer or RC Koshien Conversion kit, but because the latter had been discontinued, this is the only choice for purchase.
I don't use XAM very often, but it's a well-known manufacturer, so the quality is not a problem.
It's useful because some sizes are not available in other SprocketManufacturers.
I've tried 415 and it definitely seems to be lighter.
Note that the number of LINKs in the chain increases because of this, so you have to count them carefully to get a good match.
