Check the listing for details. Hope Tech 4 V4 Hydraulic Disc Brake Set - Front & Rear Post Mount, Blue,. Condition: New. Listed at 541.08 USD. Bike Shop Bundle: Hope Tech 4 V4 Hydraulic Disc Brake Front & Rear Set Blue | High-Performance, Lightweight, and Reliable Hydraulic Brake System for Mountain & Cyclocross Bikes Upgrade your braking performance with this premium Hope Tech 4 V4 Hydraulic Disc Brake and Lever Set, designed for serious riders seeking maximum control, enhanced stopping power, and superior durability. This front and rear brake bundle features innovative engineering, precision materials, and versatile adjustability, making it ideal for mountain biking, cyclocross, and aggressive trail riding. Materials & Construction: Manufactured from CNC-machined aluminum forged billet, the Hope Tech 4 V4 calipers and levers are engineered for strength, lightweight performance, and corrosion resistance. The hybrid-style.