You've heard about 98cc 2Fast kit but never seen on a shop? Yes, because so far it does not exist. Several racers have the modified 94cc kit with longer stroke. This model is simply taken on the same base but with more material for optimal mounting with displacement of 100cc. Need to be used in conjuction with 47mm stoke/95mm conrod 2Fast cranskshaft. The cylinder have 2mm more on top and 5mm more in the bottom. So there will be no need for cylinder base spacers for mounting.