You can race anything you want. Race a lawn mower if you want. They do that in the rural redneck parts of America and have a blast doing it.
PJZocc did his provisional weekend on his Aprillia RSV4.
Try a race weekend before you start making all these financial moves and incur a boat load of hassle and credit rating potential for chaos to get rid of the CBR1K.
You can pick up a Grom/XR100/Ohvale/TTR125/CRF125 and race MiniGP on a kart track if you want to stir your competitive juices.
As I mentioned in another thread today, my son and I just got back from our first WERA weekend racing our Ohvales in their 50 mini and 80 mini classes.
There were only 5 racers on the grid....but our lap times dropped seconds every time out...and when the green flag said, "GO" I dropped 5 seconds from practice times both days.
I was 240 pounds on a 150 pound/15hp bike and I had a blast.
Sunday practice 1 I was riding around with my son showing him some lines he could run to clean up some of the places where he was losing time, and next thing I know, the little sh*t's drag racing me down the back straight....he's tucked...got his throttle pinned and looking over at me
with an evil grin on his face.
We got trophies for showing up basically....but we were there. Race days go by fast, too.