The JB4 is a true user adjustable plug and play solution.  Power Gains: Starting at 20kw and 40nm with up to 35kw in certain rpm ranges. The JB4 features CANbus...

BMS DATA Cable for JB4 Wired JB4 app connection for your phone, tablet, or laptop. This plugs into the JB4 and the USB end plugs into your device containing the...

The JB4 Wireless Bluetooth Connect Kit (Rev 3.7) allows your Bluetooth 4.0 compatible Apple® iOS® and Android® devices to connect wirelessly to your JB4 via the JB4 app. View critical...