Naturally, you want your racer as light as possible, as compact as possible and remove all “useless” weight. I use a Graupner radio which has SumD (Similar to sbus) and meets all my requirements. I like the higher build quality of a Graupner radio in comparison to the most common used in the Racing scene, the Frsky Taranis.
The Reciever for the Grauper radio I use is a GR-16. It’s one of the smaller ones, but I really wanted to make it use even less space. I searched online for help about removing the casing which was sadly fruitless so I decided to do an adventure on my own.