The Racetrack Model Magnet (RMM) and the Enhanced Racetrack Model Coil (ERMC), are racetrack test magnets being developed at CERN. Their main goal is to demonstrate, in view of future high field accelerator magnets, that a nominal field of 16 T can be reached in a 50 mm bore, with margins and limited training. Also, this program gives the opportunity of studying field quality, and the opportunity of exploring coil manufacturing concepts as well as loading strategies. In the coil ends, the peak field has to be reduced in order to keep a safe margin. Also, the high longitudinal Lorentz forces must be managed to limit the motion of the coils, which would degrade performances. This presentation shows magnetic and mechanical studies, and proposes solutions to achieve a peak field in the ends lower than in the straight section, while containing the electromagnetic forces.