SR22 pilot reported engine malfunction in cruise. Pilot diverted to a nearby airport and landed safely.

Narrative

While at 5;000 in cruise flight en route to ZZZ1; my 2021 Cirrus SR22-G6 suddenly began experiencing moderate vibrations. I was operating at 65% engine power; lean-of-peak; per Cirrus's recommended leaning procedure. The vibrations were continuous and felt like slightly more than continuous light chop and felt consistent with an engine malfunction. I did not receive any abnormal Primary Flight Display (PFD)/Multifunction Flight Display (MFD) indications; however I checked my engine synoptic page to find that the CHT on my #2 cylinder dropped to 228 degrees C (with other cylinders at approximately 300 degrees C) and my EGT on my #2 cylinder dropped to 1225 degrees C (with other cylinders at approximately 1410 degrees C). I checked my NEAREST page to find that I was only 17 miles northeast of ZZZ; I programmed the GPS to fly direct to ZZZ and the aircraft (on Autopilot) immediately initiated a left turn. I [requested priority handling] with ZZZ Approach and told them; 'I believe I've lost my #2 cylinder. I'm turning direct ZZZ.' They instructed me to descend; however I told them I would like to keep my altitude until I got closer. While in the turn towards ZZZ; my CHT #2 dropped to 198 degrees C and my EGT #2 dropped to 940. The engine vibrations continued. The remainder of the cylinders continued operating as normal. I reduced power as I got closer to ZZZ so to not shock-cool the engine and to perform a stabilized approach. ZZZ Tower rolled the emergency vehicles. I requested the straight-in visual approach to Runway XX and landed uneventfully. The aircraft is grounded pending an inspection from a mechanic.