Im going to have to agree with all of the above. If I was old and didnt go off trail ever, I'd pick the 550. I'd rather the 440 though. More power, most likely bigger track, stronger chassis, better throttle response...and just cooler all over.
depends on what you ride. if your riding trails %100 of the time or close to that. you won't need a 440 power and suspension.
i'm not sure if the 440 has oil injection and if your trail riding thats a major down fall if it doesn't
i also heard that the 440's are pretty finicky to get running properly!
Stick with the 440! A lot of power with that little 440 l/c. I just wanted to add that your suspention doesnt look setup correctly on the 440. Looks like the back end is down to far causing the front of the track to not even touch.
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