I suspect that any riser is going to be strong enough. The extra cost is for the quality of the finish, the reputation of the supplier, etc. I put Phatriser II pullback risers on my wife's '06 1300S and they worked great. However, they were the absolute maximum replacement risers that could be added without buying new lines and cables. With these risers, the front brake line was tight against the tank in a full right lock turn of the bars which is not good. In addition, to even accomplish this with the front brake line I had to reduce the amount of line in the "loop" that handles the suspension travel and remove the line from its clamp at the lowest point of the bar. I recommend getting a line that is ~+3 inches in length to replace the stock front brake line. To determine exactly how long your line needs to be, install the new bars, use coaxial cable placed along the desired path of the path of the brake line and compare this length to that of the stock front brake line. This will give you a delta length between the two somewhere in the +2 to +6" range and probably pretty close to +3 inches. Call this delta distance "X". Then you order a +X inch front brake line from an aftermarket company for a VTX1300S. You also have to make sure the banjo fittings on the ends of the new line are in the correct clocking position or that they can be rotated. On some lines. there is a coupling in the middle of the brake line that can be rotated to achieve any desired clocking position. On other brake lines, the banjo fittings themselves can be rotated in the hose.
Once you install this new brake line, you have to bleed the brakes to get the air out and brake fluid in. Do NOT get brake fluid on any painted part as it will quickly eat the paint. This includes shiny painted parts like fenders but also the frame or the exterior of the brake fluid reservoir.
