Description
Four-piston gravity brake for the most demanding applications. Delivers maximum power with no compromise. Super-smooth lever action and premium construction make controlling that power feel natural. The benchmark brake for gravity and e-bike use.
Increased lever hook for greater control and security during aggressive riding
New dimple design improves comfort during hard braking and retains grip in all weather conditions
New cam design decreases the free lever stroke while maintaining the feel and modulation in the braking zone
Roller bearing main pivot
2 guide bushes keep the piston running perfectly smooth and straight
Bleed port added to the master cylinder body enables bleeding without removing the lid
One-piece caliper design for the best stiffness to weight ratio
Larger pistons increase ratio of the brake for more power
Improved caliper stiffness helps to improve lever feel and increase power
Larger adjustment range for better compatibility with third party hubs and frame combinations
New bore cap design decreases overall width of the caliper for easier packaging and better frame compatibility
GR4s are not compatible with Vented rotors.
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