Hi Gonzalo,
Greetings from Syncfusion.
Currently, we do not have support for “Custom view support for knob in SfRangeSlider”. We have already considered your requirement as a feature request and have logged a report for the same. The feature status can be tracked through following link.
The feature will be available in any of our upcoming releases. You can communicate with us regarding the open feature at any time using the “Contact “option.
Regards,
Dhanasekar