Hey dude with the bore kit in the 250ex did it help alot? does it cut down on the life of the Machine?????? and if u already had a pipe , k&n and and rejected whats it feel like after the bore on a scale 1-10??? Can u just nock the thumb throtle and bring it up effortlessly?? If I get a 250ex this summer I am going to install the bore kit but wait dont say save and get a 400 or 300 I want the 250ex lol ha got you before u said nething..

and brok.3 or neone else have u raced someone before then after the bore beat them or come closer? Thankz guys.......