Headset Tools Lubricant Misc. Boosters Improves brake lever modulation. Fits Linear pull and traditional cantilevers. Fits both cantilevers and V-brakes. The extraordinary power of the V-Brake itself can cause frames or forks to flex.
Pads dont engage the rim at an optimum orientation.
What you think is brake fade, is probably frame flex. The Booster holds brake bosses in perfect alignment, no matter how much pressure they're under. You get better braking. U-U Booster Computer enhanced carbon fiber design minimizes weight and flex. Fits Linear brake or Magura rim brake.