HOPE BRAKE TECH 4 X2 NO ROTOR-SILVER-PURPLE-BRAIDED-L-H"The Tech 4 X2 builds on our 25+ years experience designing and manufacturing hydraulic brake systems. The Tech 4 uses all new internal sealing for reduced friction and the pivot spins on roller bearings, allowing the spring rate to be reduced. The lower spring rate in turn gives a lighter lever action, reducing rider fatigue and keeping our legendary feel and modulation. Combine this with an updated X2 Postmount or Flatmount caliper a lightweight