This ECM is calibrated for an EBR™ 1190RX or SX with stock gearing and stock exhaust but with the secondary muffler removed. The firmware and calibration are already loaded onto the module; no additional tools or products are necessary. This ECM is for off-road use only. 41-43 tooth rear sprocket; see 204074 for 44-46 tooth sprocket.
If you check the box above, you can send us your compatable ECM to be reprogrammed, and we will send you back the ECM with this calibration loaded onto it. This saves you the cost of a factory-new ECM.