98 Sportsman 500 accelerating issues

Hey everyone i have a 98 sportmans 500 and it seems to not want to accelerate past what would be first gear. It does not bog down at idle or under a load. I can tell a difference in the high and low gear so i know im in high. But when i push the accelerator it will pick up speed just fine then basically start ro rev out. Any help would be greatly appreciated.

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