I have a 2008 Harley Davidson Ultra. It has been bored to a 107 cu with 110 hp and 116 torque. Before I installed the Reefer I was seeing oil temps of up to 280°F with a oil cooler from HD. After the installation the highest temp I have seen is about 240°F. while in heavy traffic. This a great design and is easy to install. Their customer service is outstanding. I would recommend this product to anyone who is having any sort of overheating problems. I would like to say thanks to Stacey and all the other good people at Ultracool.