When you purchase a 2021 KTM 250 SX-F TLD version the bike comes with a slip on Akrapovic Evolution muffler. However, I know that sometimes, certain machines react better to full systems rather than slip ons, we decided to get the full Evolution system to see how it changes the KTM 250 SX-F’s engine character.…
![](https://www.keeferinctesting.com/wp-content/plugins/trx_addons/components/lazy-load/images/placeholder.png)