I don't have a BBK and I never thought I had overheating problems and I just installed a temp gauge and luckily I was right. I was in Glamis around New Years eve and just cruising around my temps were about 180. A couple of rides up Oldsmobile and the temps went up to about 195 and quickly came down. On a long, hard dune run my temps got up to 205/210 and stayed there until we stopped and the temp went down fairly quickly. The only "cooling" addition I've made to my 2009 Teryx is a DASA water impeller, which I think works very well and is only about $60. I've also heard of others taking their stock Teryx radiators to a radiator shop and converting it to a triple pass so the coolant stays in the radiator longer. I'm not 100% on the price, but I think the radiator mod costs around $150 or so. Good luck.