Tech3 e4 disc brake with braided hose tech 3 lever matched with the e4 caliper offers an excellent brake perfect for the all mountain enduro rider rigid cncd one piece caliper e4 caliper uses 4x16mm phenolic pistons to give more usable power tech 3 lever offers 5 more power compared to our previous lever ergonomic lever design to fit around other handle bar items the tech 3 lever is directly compatible with shimano i spec shifters specification tech 3 lever offers genuine bite point and reac