by crfsonly » Sun Oct 02, 2005 4:46 pm
there's no replacement for displacement! racers have been saying that since displacement measurements have been taken. if you can only do one then go with the big bore. it's more work to install and doesn't give you that look but it will give you more power. having said that you will then likely want to free up the exhaust and intake to take advantage of the new cc's.
we are in the midst of reviewing the BBR 120cc kit for the XR/CRF100. We hope to have it done in a couple of weeks..but so far it's going well.
ken