I like the 140 because it's cheap, easy and Rips. I also like the fact that there are alot more nozzle setups for them and everything is cheaper then 144mm.I have a freestyle pump cone, skat 15, and PJS holeshot nozzle setup and it rips. I have rode both and could feel much of a difference, both are a HUGE jump from stock 122mm. LMK if you choice the 140 kawi way, i have pumps and zxi1100 shafts for them i was going to keep for my wifes fx but i sold it. LOL