Jetting Question for hot and cold weather

With the new 4 stroke motors due you need to change the jetting on the bike when the temperature changes a lot? I always changed my jetting on my 2 strokes when the temperature dropped under 75 degrees. I never hear about anyone changing the jetting on there bike once they get it set up. I know you need to change it for elevation but not sure about temperature. :thumbsup::bonk: Thanks

Absolutely.

Cold, Dry, Low Elevation = Denser Air = Richer

Warm, Humid, High Elevation = Thinner Air = Leaner

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