If you want hydraulics for your lowrider bike you will probably get suspension front forks, long ones will be a very popular choice, these will bring you bike lower for even more coolness and gives you a more easy-rider look.
Get the longest forks that are available and they should have a lot of travel on the legs, this will give a more comfortable ride, more of a glide than a ride, really!
As much chrome as you can get is of course the most important thing with any item for your lowrider.
To be different from all the other guys you could get a hydraulic seat-pin, this goes between the saddle and the frame and give you suspension for your seat and a bit of damping to any bumps in the road for a smooth ride.
A full suspension lowrider may have been made, sounds a great idea, but I’ve not seen one yet, keep a look out because I’m sure some one will make one, one day, for sure it will be very shinny and very low.
Lowrider Bikes With Spinners
Red Lowrider Bike
Lowrider Bikes with Hydraulics