Fixed rotor
Hope lists 6-bolt mounting. Its current page specifies 1.8 mm thickness for 120–160 mm rotors and 2.3 mm for 180–225 mm. Check the individual diameter and the brake’s thickness allowance.
Hope Fixed rotor sizes & technical bookBRAKES · HOPE TECHNOLOGY
Choose the brake. Complete the setup.
Compare intended use, model-specific fit requirements and the parts needed around the brake. Product facts below come from Hope; this is not a ride-tested ranking.
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Brake models compared.
| Model | Use | What distinguishes it | Fit & source |
|---|---|---|---|
| EVO X2 | XC / downcountry | Two pistons; flat-mount and post-mount options. | Choose the caliper mount for the frame or fork. Use the EVO instructions and its own shifter-mount chart. |
| XCR Pro X2 | Lightweight XC | Carbon lever blade, titanium hardware; flat-mount or post-mount. Hope lists weight from 199 g. | Hope specifies a 2.3 mm maximum rotor thickness. Its flat-mount page lists specific Hope lever families; do not infer compatibility with drop-bar levers. |
| XCR Pro E4 | Downcountry / trail | Carbon lever blade, titanium hardware and E4 post-mount caliper. Listed at 236 g without fluid. | Black hose with a crimped caliper connection; check the XCR instructions and direct shifter-mount chart. The weight basis differs from other listings. |
| EVO TR4 | Trail | Four-piston brake aimed at medium-duty trail use. | Use the model’s installation, bleed and shifter-mount documents to complete the lever, hose and caliper setup. |
| EVO GR4 | Gravity / e-bike | Four-piston gravity model with a one-piece caliper. | Hope explicitly excludes its Vented rotors from GR4 compatibility. Larger or thicker does not automatically mean suitable. |
| RX4+ SL | Road / gravel crossover | Four-piston caliper; separate DOT-fluid and mineral-oil versions, with multiple mount variants. | Match the exact lever model, fluid-specific caliper and mount. Hope lists selected Shimano, Campagnolo and SRAM drop-bar systems; see the examples below. |
| Tech 3 Duo | One-hand independent brake control | Two separate hydraulic circuits operated from one hand; X2, E4 and V4 caliper options. | Each lever has its own reach and bite-point adjustment. Hope lists a SRAM-only direct shifter mount for this system. Confirm the complete configuration with the fitter. |
This comparison covers seven systems. Hope’s wider catalog also includes Tech 4 V4, EVO V6Ti and RX2.
Browse the full brake catalog on Hope’s site02
Rotor diameter is only one dimension.
Vented rotor
3.3 mm thick, 6-bolt, in 203 and 220 mm sizes. Hope designs this rotor for V4 brakes. It is not compatible with EVO GR4.
Hope Vented rotor specificationsAlso check the hub’s rotor interface, frame/fork rotor limit, adapter and clearance. A 200 mm rotor and a 203 mm rotor require their corresponding mounting configuration.
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Match the pad shape, then the compound.
Hope lists Race, Standard and Sintered compounds for MTB applications, with a Road compound for RX4+. Replacement kits include the spring clip and pin. Choose the exact caliper’s pad before considering compound; the family name alone does not make pad shapes interchangeable.
Hope pad range, usage guide & replacement video04
Where Hope meets Shimano and SRAM.
The RX4+ SL page separates mineral-oil and DOT versions. Its compatibility list includes Shimano GRX RX820, RX810, RX600 and RX400 among the mineral-oil applications, and SRAM Red, Force, Rival and Apex drop-bar systems among DOT applications.
Use the exact model list and the corresponding instructions before choosing. A Shimano or SRAM logo alone does not establish fit, and this listing does not cover every newer lever generation. Mount type and clearance remain separate checks.
Read Hope’s lever compatibility list & fluid-specific instructions05
The complete brake recipe.
- Lever + caliperRecord exact model and generation, intended riding use and lever reach needs.
- Rotor + hubRecord diameter, thickness and 6-bolt or Centrelock attachment.
- Frame/fork + adapterIdentify mount type and approved rotor size; match adapter and bolts.
- Pads + retentionMatch pad shape, compound, spring and retaining hardware to the caliper.
- Hose + fittingsUse the specified hose, connections, routing and sufficient length.
- Fluid + bleed equipmentFollow that system’s manual for fluid and bleed fittings. RX mineral and DOT versions are distinct.
- Shifter/dropper + clampUse the brake family’s direct-mount chart or appropriate separate clamps.
- Service + spare partsKeep the exploded diagram, part numbers and service instructions with the selected model.
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Manuals and replacement parts.
Each model link above leads to its own manuals and diagrams. EVO pages include bleeding instructions, lever-blade selection, master-cylinder and caliper diagrams, and direct shifter-mount charts. The RX4+ SL page provides separate DOT and mineral instructions plus mounting charts.
Open Hope’s document library & service contactSources reviewed September 28, 2026. Confirm the selected product revision before purchasing. No live stock or complete cross-brand approval is implied.