SLR 1 40 650b Wheelsystems | Sure Footed Speed

The SLR 1 40 650b WheelSystem delivers the same lightweight efficiency and aerodynamic advantages as its 700C counterpart, but is specifically designed for smaller frame sizes. This performance road wheel offers rapid acceleration and nimble handling—making it the perfect choice for small riders taking on big challenges.

slr 1 40 650b hub detail

LIGHTWEIGHT

Optimized carbon layup with high-tensile-strength carbon fiber strategically places reinforcement at critical stress points, creating a stiff, lightweight structure. At just 1300g, the 650b option further reduces the weight, making it ideal for smaller bikes and lighter riders.

EFFICIENT

The SLR 1 40 650b WheelSystem features a lightweight carbon rim specifically tuned for smaller frame sizes and riders. Its smaller diameter and shorter spokes offer increased stiffness and better transmission efficiency.

rim detail

slr 1 40 650b side view

CONFIDENT

A strategically optimized carbon layup reinforces key stress zones with high-tensile-strength fibers, enhancing strength without adding weight. The hookless rim design forms a continuous, robust structure for lightweight durability, while the 22.4mm inner width and wider 2.8mm bead provide better tire support and more confident handling on road and mixed terrain.

Highlights

SLR 1 40 650b WheelSystem with interactive tooltips

Techs & Features

Optimised Carbon Lay-Up

Giant optimised reinforced layup places extra maximum-strength carbon fibre only where needed, creating a robust structure at minimal weight.

Dynamic Balanced Lacing

Engineered with more leverage on the “pulling” spoke and less on the “pushing” spoke, DBL technology maximises the performance of the wheel while it’s in a dynamic state by forming a perfect balance of spoke tension to deliver optimal transmission stiffness and braking performance.

Hookless Rim Design

Hookless rim design enhances overall durability, offers a wider inner rim width without adding extra weight and also helps create a more round tire shape providing superior grip and handling as well as added sidewall support when cornering. Additionally, without the rim hook to “push” the tire bead inward, hookless rim design offers a more seamless airflow between the tire and the sidewall of the rim, resulting in less drag and improved aero performance when compared to standard hook-type rims.

Low Friction Hub

Giant uses precision machined internals to eliminate the power loss that occurs through the pressure from the hub internals on the bearings, reducing friction and minimizing rolling resistance.

Tubeless System

Fewer flat tyres. Greater traction. Less rolling resistance and a smoother, faster ride. Giant’s Tubeless System makes it easier than ever to experience all these benefits.