2.2K views · 69 reactions | How to Replace a Dirt Bike Chain - KX 250X - O Ring Chain . Order your Parts from Rocky Mountain ATV/MC using this link to support DBC https://www.rockymountainatvmc.com/l/Dirt-Bike-Channel?ref=1017 Since my 2021 KX250X came with a standard chain that keeps stretching, I want to replace it with something that is better. I decided to turn on the cameras to take you along. | Dirt Bike Channel | Facebook