Giaqui

Hi guys, I have a Ryzen 1700 paired with a GTX 1080. Since there is some bottenecking I should oc the CPU. The only problem is my case has not the clearance for AIO Coolers and has only 161mm availble for the air Cooler height. In addiction I have 2 sticks of very high profile ram (team Group team night led 3200mhz) that don't allow Cooler fans to go over them. Can I find an air Cooler which allows me some overclocking, maybe 3.9ghz and not 4.0? Even 3.85 Ps. Sorry for bad English