If you demand the highest of brake power Hope have you covered with the new GR4., engineered specifically for racing and downhill riding. 

The GR4 is a 4-piston hydraulic disc brake that delivers maximum power with a super-smooth lever action. This should be your choice for DH bikes and rapid electric mountain bikes that need that extra braking bite.

Please note, the GR4 is NOT compatible with the Hope vented rotors. If you are swapping over from the Tech 4 V4 you will need new rotors.

Pre-orders - We expect high demand for these brake sets, get in contact at support@biketart.com to pre-order and get your hands on them asap!

Key Features - 

Newly developed Master cylinder features a new cam mechanism to reduce free stroke while maintaining the feel and modulation,

Redesigned lever with increased hook and new dimple texture for maximum grip and control in all conditions. 

New piston assembly features a secondary guide bush and sliding guide which ensures ultra-smooth operation throughout the full lever stroke.

A new master cylinder bleed port allows clean, tool-efficient bleeding without lid removal.

Four hybrid pistons allow smooth movement and excellent heat management

The larger pistons increase the ratio of the brake by ≈ 6% when compared to Tech 4 V4 brake system

Improved caliper stiffness increases power and control 

SPECIFICATION - 

- Designed and made in the UK
- GR4 is the 4-piston Race/DH brake - super strong power for controlling the highest speed and maintaining control over the roughest features
- Fantastic colour options to match your bike - use with Hope floating rotors for an awesome look!
- LH and RH both come with 1700mm hose (trim to fit front or rear, olives and inserts included)
- Genuine bite point and reach adjustment without tools
- Direct shifter mounts available for SRAM and Shimano EV

Hope brake mounts - HERE

Hope shifter mount adapters - HERE

If in doubt about what you need to install  some Hope brakes give us a shout - suport@biketart.com or 01227 832582

We really rate the Hope brake range at Biketart for their amazing reliability and performance, as well as the awesome look, we therefore spec them on a ton of our custom builds!