You can order brighter bulbs from Radiantz at this link here http://www.radiantz.com/products#!/Z-Towerz/p/39306367 -
You'll want the Z-Towerz Red 1157 p/n 3701-17. JagJeep on this forum tried them on his Valkyrie trike, which uses the same tail lights, and he had great luck with them.
Let us know if you have any other questions, and thanks for choosing Ace Trike & Roadsmith!
Thanks, for the help. One more question: What about Passenger Grab rails like the ones Harley is putting on their new Freewheeler. Does RoadSmith have anything like that ?