Amp up your Harley The RKFHD9813 kit allows you to install a Rockford Fosgate Power Series TM400X4ad powersports amplifier (see Details) in select 1998-2013 Harley-Davidson Road Glide, Street Glide, and Electra Glide motorcycles. The kit includes everything you need to install your new amp, from a mounting plate and wiring harnesses right down to the screws. Add some good speakers and you'll be ready to rock!