Hi all, I have an 04' 250 EXC 4 stroke. Heard about the big bore kits and cannot find any online. HT-Racing just has a bunch of dead links. I've talked to 2 different dealers and they have no idea if those kits are made anymore by anyone. Am I out of luck as it's 2017 or are there still Big Bore Kits out there? I love the top end of my 250 but there is nothing down low. All posts about the big bore kits for these bikes are 10 years old. Any help is appreciated.