For CBR 250 RR race based car
There is nothing except Kore.
Because dust is attached to the chain grease every time many times, it dipped in washing oil and cleaned every time
Since it is a nonseal, things that use mind are few.
It is a light thing and there is nothing wrong with little friction.
It was originally used to size down 520 size to 415. Purchase the front and rear sprockets from the Puwa Kurato. Durability has also been verified and considerable weight saving was achieved. I do not expect durability because it is for the race track so I will order again.
I used it in a mini bike race, but I also used the 415 size chain of other manufacturers, but as soon as I used the other manufacturer chain, it got elongated and I did not want to use, but regarding the DID chain I did not feel pace.