HFS® system development for Classic Trial motorbikes started with BULTACO Sherpa model 199A, with private pilots in different races; later and with clear competition orientation, around mid 2009, it was started co-operation with Vitale Máquinas (workshop specialised in OSSA competition and leisure motorbikes reconstruction and set-up). It was chosen a OSSA 250 MAR first series to develop the initial set-up and then to make the first tests.
