I have a 2010 flhx street glide that has been pumped up to a strong 110 with with big valve C&C ported heads, 58mm intake bigger injectors cams high volume oil pump and bunch of other work and after dyno tuning the bike it was running pretty hot so I installed the reefer cooler and the temps dropped almost 50 degrees from what it had previously been running the bike produced more powder and runs a little quieter since the oil is not like water anymore. I would recommend this cooler to anyone even if you have a stock bike. It’s better than the one from Harley and keeps your engine cool and happy when setting in traffic. It also helps to extend the life of your engine because you don’t get near the thermal break down of the oil because it’s running cooler