Four-piston trail brake for medium-duty use. 
The ultimate trail-riding brake—impressive power balanced with a firm and consistent lever feel. Super-smooth lever actuation provides excellent braking feedback for absolute control.
New cam mechanism designed to decrease the free lever stroke while maintaining feel and modulation in the braking zone
Piston movement – Additional secondary guide bush to keep the piston running perfectly straight to maintain super smooth piston movement.
Bleeding – A bleed port has been added to the master cylinder body to allow bleeding without removing the lid.
One piece machined caliper for reduced weight and increased stiffness
Four hybrid pistons allow smooth movement and excellent heat management
Larger pistons for the increased power
The larger pistons increase the ratio of the brake by 6.5% when compared to Tech 4 E4 brake system
Revised bore cap design reduces width for more frame clearance
Larger pad improves lever feel and consistency
Choose this caliper for power balance with a firm lever feel and excellent braking control