The Hope Technology Tech 3 E4 Duo Hydraulic Disc Brake is aimed at riders wanting to operate 2 calipers individually with one single hand. The master cylinder is combined with the powerful E4 calipers and will suit any riding for XC to Enduro/All mountain.Unique double lever design for riders who want to operate both brakes individually with one handTech 3 lever offers genuine bite point and reach adjustment without toolsCNC machined from 2014 T6 aluminium alloyPowerful 4-piston E4 calipers gives you all the power and control youll needThe design is derived from the proven Tech 3 master cylinder and with the finger reach and bite point adjustments on each lever, you can be sure the levers will feel comfortable and suit your riding style. The Tech 3 Duo Master differs from our Uno system as there is a total in-dependency between the front and rear calipers.The E4 caliper is the replacement for the legendary M4 and is built for life on serious terrain and is probably best suited to Enduro and All Mountain bikes with travel of between 140 and 160mm. The E4 caliper is anodised for a sleek, stylish look and is CNC machined from 2014 T6 aluminium alloy. The E4 generates fantastic, progressive braking power by using four 16mm phenolic pistons and pad changes are easy thanks to the top loading pad entry.