Reserve 40|44 GR – Aero Gravel for Riding & Racing
The Reserve 40|44 GR represents the new generation of high-performance gravel wheels, designed to offer speed, durability and versatility on mixed routes.
Perfect for those looking for a unique set capable of excelling in both gravel competitions and dirt explorations, they combine the aerodynamic precision of a road wheel with the typical solidity of off-road.
Designed for every adventure
The differentiated profile design — 40 mm at the front and 44 mm at the rear — guarantees a perfect balance between stability, aerodynamics and comfort .
The front offers greater handling and control on dirt roads, while the rear maximizes aerodynamic efficiency and power transmission.
This “mixed profile” approach is designed for cyclists who want to push hard in the race but also tackle long gravel routes in safety and fluidity .
Clean, uncompromising design
The 40|44 GR was created to tackle everything , without limitations:
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No cyclist weight limit
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Compatibility with tyres of different cross-sections
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Tubeless or inner tube assembly
The result is a reliable and durable wheel, capable of handling uneven surfaces, sand, gravel or asphalt with the same safety and precision.
Reinforced spoke attachment
Each rim is made with internally reinforced spoke holes , an exclusive Reserve technology that increases strength at the highest stress points – around the nipples – without adding weight.
This solution guarantees uniform spoke tension and greater durability over time, even in the most extreme conditions.
Technical specifications
| Characteristic | Detail |
|---|---|
| Intended use | Gravel riding and off-road competitions |
| Wheel weight | DT 180: 1376 g / DT 350: 1454 g |
| Rim weight | 400 g (40 GR) / 425 g (44 GR) |
| Circle depth | 40 mm (front) / 44 mm (rear) |
| Internal width | 27.4 mm (front) / 27 mm (rear) |
| External width | 36 mm (front) / 34.4 mm (rear) |
| ERD | 560 mm (front) / 552 mm (rear) |
| Posterior asymmetry | 2.7 mm |
| Recommended tires | from 30 to 50 mm |
| Rays | 24 |
| Hub spacing | 12x100 mm (front) / 12x142 mm (rear) |
| Compatible bodices | SRAM XDR / Shimano HG-EV |
| Brake type | Centerlock Disc |
| Technology | Tubeless Ready |
Configuration options
| Hub | Set weight | |
|---|---|---|
| DT 350 | 1454 g | Reliability and solidity |
| DT 180 | 1376 g | Maximum smoothness and lightness |
All versions retain the Reserve's precision-crafted construction, with rigorous quality control on every single component.
Strengths
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Differentiated 40/44 mm profile for balanced aerodynamics and stability
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Wide internal section (27 mm) for gravel tyres from 30 to 50 mm
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Carbon construction optimized for stiffness and comfort
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No weight or configuration limits: tubeless or inner tube
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Reinforced spoke attachment for durability and reliability over time
Ideal for
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Gravel and marathon races on mixed surfaces
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High-performance adventures and bikepacking
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Cyclists looking for lightness, precision and resistance in a single set
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Hybrid road/gravel use without compromise
In summary
The Reserve 40|44 GR are the gravel wheels designed for those who want to push hard everywhere , from mud to dirt roads.
Fast, robust and ready for anything, they combine Santa Cruz aerodynamic technology with the build quality that has made Reserve an absolute benchmark in the world of carbon wheels.
