IKK brand gear set is used by many Y125Z racers here in Malaysia.
Some have tried it and said that this one is much better than the Yoshi Racing Gear Set.
I can’t give the scientific data, but most of the people who have used this gear set is very satisfied with it, even though brand is looks like cheap one.
The racers here doesn’t care what brand the parts is, as long as it is high in quality and do job well enough, they’ll used it.
The shopkeeper tell me that this brand is high quality because it is being made in the same factory with UMA Racing parts.
I guess he is right.
This item is for sale here: http://motomalaya.net/store/index.php?act=viewProd&productId=36