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HOPE

HOPE TECH 4 EVO GR4 Aviation Rear Brake Silver/Orange

Réf. fabricant : T4EG4SCBR
The HOPE TECH 4 EVO GR4 brake represents the pinnacle of technology and British craftsmanship. Designed to deliver a perfect feel and absolute control,... Read more

Recommanded price* : 315,00 €

299,90 €
299,90 €
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Description

The HOPE TECH 4 EVO GR4 brake represents the pinnacle of technology and British craftsmanship. Designed to deliver a perfect feel and absolute control, it is the ultimate evolution of the renowned Tech 4 system. Entirely machined from a block of 2014 T6 aluminium, it combines precision, power and reliability to meet the demands of the most extreme disciplines, particularly downhill and e-bike.

The TECH 4 EVO master cylinder benefits from significant improvements: new piston, floating head, optimised cam, second guide ring and three new levers. These developments provide smooth and customisable control of braking power. The lever pivot rests on two annular bearings, ensuring a smooth and consistent action, while the adjustment dials allow fine-tuning of the reach and bite point to suit the rider's preferences.

The GR4 calliper, Post-Mount (74.2 mm) standard, is machined from a single piece for increased stiffness and controlled weight. Its four hybrid pistons — two of 17 mm and two of 18 mm — guarantee maximum power and optimal thermal management. This model offers 6% more power compared to the Tech 4 V4, while maintaining exemplary progressiveness. Ideal for gravity and e-bikes, it remains incompatible with vented rotors.

Supplied with three types of pads (Racing, All Conditions, and E-Bike), the HOPE TECH 4 EVO GR4 adapts to all disciplines. With its 2 m aviation hose, 14 colour combinations and highly refined design, it stands as the absolute benchmark for premium braking for the most demanding riders.

Technical manual.

Ref: 15478140436860

Informations techniques

TECH 4 EVO Master Cylinder:
Fully machined from a 2014 T6 aluminium block.
New piston and floating piston head.
New cam and 2nd guide ring.
3 new levers for more precise and customisable control (standard as original, Control or Power as options).
Lever pivot mounted on 2 annular bearings → smooth and durable action.
Bite point and free stroke adjustment dials for quick and precise adjustment.
Natural braking feel, controlled power and optimal reliability.

GR4 Calliper:
Standard Post-Mount, 74.2 mm bolt spacing.
Monobloc machined from a 2014 T6 aluminium block for increased rigidity and reduced weight.
4 hybrid pistons:
2 x 17 mm pistons (stainless steel + phenolic resin).
2 x 18 mm pistons (stainless steel + phenolic resin).
Braking power increased by 6% compared to the Tech 4 V4.
Optimised thermal management and excellent progressiveness.
Not compatible with vented discs.
Revised bore cap design: reduced width for better frame clearance.

Brake Hose:
Diameter: 5 mm.
Length: 2 m.
Aviation version

Pads included
Racing (green): maximum performance.
All Conditions (red): versatile use.
E-Bike (purple): endurance and power suited to e-bikes.

Compatibility & Options
14 colour combinations available.
Compatible Matchmakers:
HBSP426
HBSP441
HBSP431
Sram
Sram T-Type
Shimano I-Spec II & EV.

Important note:
Works only with DOT 4.0 or DOT 5.0 fluid.

Weight (manufacturer): 336g with bolts.
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Informations prix

*Supplier recommended retail price in September 2025