I had the RPW Slash (SlashNess) pipes and made 106 ft-lbs at 2200 rpm. They do kinda stay flat until 3200. The Thor pipe is very linear (curve looks like an arc) after 2500. If you find a pipe that does better on average torque across the tach than the Thor, BUY IT.
2006 Victory Kingpin
110 Cubic Inches -- Balanced S&S crank/rods, Lloydz iron liner big bore, 11:1 Wiseco pistons, massaged
stock heads, stock throttle bodies/injectors/intakes, S&S .495 cams/springs/retainers, Torque Tubes
airbox, RPW Thor pipe, Lloydz ECU, PC-III, Rivera Pro clutch spring, 31 tooth pulley w/Buell belt.