For off-road and racing use! Speed limiter removed. ONLY FOR vehicles with a Bosch MSE8.0 ECU. Easy-to-use replacement engine control unit (ECU) – simply unplug your original ECU and plug in the new one. Fits the CFMOTO CFORCE 520 (2023+) model (for the 450 model use p/n 96.2900). Intended to replace the Bosch MSE8.0 ECU (not compatible with older models fitted with a Bosch MSE6.0 ECU).