When I first came across the ultra cool oil coolers my first impression was how much more efficient a fan assisted cooler would be compared to the standard air cooled version. The entire unit is very sleek and sanitary. I ride a hopped up dyna and even though the ultra cool wasn’t available with dyna mounts yet, it didn’t deter me. After picking up a cooler and adapting a mount the actual kit installation was a breeze. The instructions were very helpful and the diagrams actually made sense for installation compared to other bolt on accessories. As far as efficiency is concerned the cooler flat out performs. If you push your bike to its limits you understand how important it is to keep your motor operating at optimum temperatures. You can definitely notice a difference. Especially on the hard rides when only stopping for gas and continuing on. A solid purposeful addition.