Harley Davidson Road King FLHR (2007 only)

The BoosterPlug is the smarter modification, when you want to improve the rideability on your Harley Davidson Road King FLHR without spending a fortune.

Compared to the Power Commander, the BoosterPlug tuning mod offers similar or better results for must owners - at a much lower price and without the complicated setup.

You don't have to be a trained engineer or a computer programmer to install the BoosterPlug. Easy and fast plug and play installation.

Inexpensive tuning, easy installation, proven results:

- Soft and precise throttle control
- Faster acceleration
- The end of the dreaded low speed surging
- Removes the weak idle and stalling issues
- Far less popping in the exhaust on deceleration

This version of the BoosterPlug tuning mod covers all versions of the Harley Davidson Road King FLHR (2007 only).
If you have a newer Road King FLHR, you can find the BoosterPlug for it in the related products below.