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Many new cyclists soon after buying a bike, start upgrading it by buying more expensive parts. This video is about what you should pay attention to first when upgrading an MTB bike. https://www.bicyclerollingresistance.... 00:52 - Tires 02:40 - Tubeless 03:21 - Rim 04:52 - Saddle 05:30 - Drivetrain 09:03 - Fork 10:34 - Brakes