Dano's Performance offers a programmable fan controller (PFC) for the Suzuki GSXR's and Hayabusa.Testing on our in house Dyno we have discovered that motorcycles produce maximum horsepower at between 180-190 degrees coolant temperature.The problem is the fan is not switched on until between 220-225 degrees which is not ideal for producing horsepower.This PFC gives you the ability to program the turn on and turn off temperature at which you fan comes on.Please see our website for all the details at: www.danosperformance.com Thanks Dan