Designed to meet the diverse demands of modern drop-bar riders, the Reserve 40|GR Carbon Gravel Rim brings cutting-edge performance to the world of gravel and mixed-surface exploration. Developed using Turbulent Aero technology, this wheelset combines real-world versatility with aerodynamic efficiency — making it Reserve’s fastest and most stable gravel wheelset to date.

The 40mm front when paired to the 44mm rear rim delivers the perfect balance of control, comfort, and speed. Now wider than previous generations, the 40 GR easily accommodates tyres up to 50c, pairing perfectly with today’s high-volume gravel options. A semi-hooked rim design makes tubeless setup simple and secure, while external nipples and standard spokes ensure easy serviceability.

Like every Reserve wheel, the 40 GR is backed by a lifetime warranty and no-fault crash replacement, with no rider weight limits and no tire restrictions — just pure performance, built to go the distance.

Specifications:

• Internal Width 27.4mm(40)
• Spoke Count 24
• ERD 560mm(40) 
• Asymmetric Offset 0 
• Recommended Tyre Width 30 - 50mm
• Depth 40mm(40)