the 23s on the left for a 10cub run well. with moderate squish they rev well, and power is there, with lil heat build up with no signs of deto. the 20s on the right I have yet to try, they are for a 4 cub. I like the squish band and profile. So im assuming ill be hapoy with them.
apporox 8.5mm squish band on right one.
apporox 10.5mm squish band on the left one