You will need aftermarket brake line kit (app $55) from Galfer or Streamline. This Damper is used by team Honda Pro racers; This stabilizer is extremely adjustable and rugged. The unit comes with all hardware needed for an easy installation and mounts up to your 300EX in approximately 15 minutes; no drilling, welding, or grinding needed. The new Precision ELITE Model has a built in reservoir, wider and more linear adjustment range, and larger wear surfaces for even greater product longevity. Plus up to 65% better impact damping than previous models.