why would i need one? i like to race mx and stuff and i see alot of ppl with them but dont know why?? also what is good gearing does anyont know for a kfx400 set for mx i dont wanna lose a whole lot of topspeed but i guess it doesnt matter... sorry i should post that in the kawi forum but you yami guys are smarter those kawi guys arent very helpful. :S needs to grow more

 

well i dont know about the gearing but i know that the parking brake block off gets ride of the brake in the back so it wont wear down the pads as easy so that they will last longer and they probably also do it to shave off some weight. Its good to do its only like 10 bucks and it helps u in the long run with the price of brake pads.