If you add extension fork tubes, it could ruin the handling. You could just make visual changes to make the front forks look longer without actually extending the forks:
•Smaller chopper style headlight – mounted higher, if possible,
•Chrome or silver paint the stock front fork tubes
•Smaller front fender
•More narrow front tire
•Higher profile front tire
•If you have an older model (2017 to 2019), you might could benefit from my “EZ Fork Mod”. I did it to my 2017 Rebel 500 and it raised the front up about 25 mm.
•If you have a fork bag, you could re-locate your fork bag to above the headlight (I did it to mine)
•When you photograph the bike, place bike on a slope to make the forks appear to be longer and pull the forks up hard to temporarily make them a little longer for the photo.
Rebel500 