Vance and Hines FP4 Fuelpak Tuner for Many 2007-2013 Harley-Davidson—Red 4-pin J1850 Bus Data Port Connector Metric Engine / Clutch & Gasket (Light) OEM battery

OEM battery

Another downfall to the early model XS650's is that you have a separate rectifier and regulator on your bike

Everything bolts on using your stock mounting hardware and with no frame modifications

Front Motor Mount is fully TIG welded

Precision-bent on a CNC press brake for a prefect fit every time

Vance and Hines FP4 Fuelpak Tuner for Many 2007-2013 Harley-Davidson—Red 4-pin J1850 Bus Data Port Connector Metric Engine / Clutch & Gasket (Light) OEM batteryVance and Hines FP4 Fuelpak Tuner for Many 2007 2013 Harley DavidsonRed 4 pin J1850 Bus Data Port Connector Arguably the easiest to use and one of the most powerful tuners on the market today, Vance and Hines' Fuel Pak has taken the market by storm. And why shouldn't it? It works well and it's astonishingly fast and easy to use. FP4 upgrades include the latest Bluetooth technology, smaller size, upgraded app, and tuning capability for late model