Gulo's innovative approach

GULO Composites G-Spoke

The bread and butter of the GULO Wheel System: The G-Spoke.

carbon fiber composite spoke

The G-Spoke

The GULO G-Spoke is a triaxially braided composite carbon spoke, consisting of a blend of materials all uniquely chosen for specific purposes. In the development of this spoke, two main goals were at the forefront: lightweight and impact resistance. The G-Spoke was formulated to be able to absorb massive impacts without failing. At the same time, it will retain tension much better and for much longer than traditional steel spokes at 40% of their mass. This was accomplished only after hundreds of different spoke designs were manufactured and tested. In conjunction with this groundbreaking composite spoke body, our team of engineers utilized aerospace-grade aluminum alloys and bonding agents to complete the G-Spoke. At the end of its development cycle, the G-Spoke remains one of the lightest spokes ever produced while achieving exceptional impact resistance.

Ride Smooth Technology

While most carbon spokes increase damping, the Ride Smooth Technology(RST) used in the Composite G-Spoke focuses on compliance and comfort while maximizing stiffness and strength. We accomplished this bold mission after countless hours of R&D. Ultimately, by controlling the braid angle and using our proprietary triaxial braiding materials, we have created a wheelset centered around unique composite technology that is changing the game. When testing our wheels through the bumpiest surfaces, riders experience a considerable lack of vibrations. Reducing the chatter that can rattle your hands, butt, and feet lessens the stress on these contact points, creating a smoother ride, almost like butter.

GIS - GULO Integrated System

The GULO wheel system was designed around the exceptional characteristics of the GULO Integrated System G-Spoke and optimized as a balanced high-performance package. Our Easy Thread Interface hubs were designed with proper spoke angles in mind, such that the GIS spokes interface the rim without any stresses, binding or lateral loads. Our rims were designed with carefully selected spoke hole drilling to accept the spokes at the correct angles and reduce the likelihood of stresses and fatigue failures, which continue to doom steel spokes on almost any wheel on the market. Our GULO Hidden Nipple finishes the package with a smooth rounded contact surface which further alleviates stresses at the rim bed and provides a slick building platform. Welcome to the benefits of the GULO Integrated System and our system engineering approach to building the best wheels ever.


The G-Spoke starts out life as multiple reels of fiber on our triaxial braiding machines. The types of fiber, orientation, fill content, and braid angles have all been carefully evaluated then selected for specific attributes they contribute to the strength, resiliency, and ride quality of our spoke.

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Spools of spoke braid are then molded into their final shape. Our team developed an entirely new molding process around this one single spoke. From the highest quality molds of exacting tolerances, to our custom resin system and curing cycle, the finished spoke body is a work of functional art.


The G-Spoke is not complete until it is fitted with its end pieces. These aerospace-grade aluminum ferrules went through many renditions before they became the perfect balance of strength, weight, simplicity and clean aesthetics that they are today. They serve to finish the G-Spoke into a clean and easy to build package.



The G-Spoke only came to fruition after countless trials of different braid designs and thousands of impact tests were performed. In the GULO test lab, we developed an impact tower where every spoke met its match. Compared to standard steel spokes, which will lose tension after one impact, the final version of the G-Spoke surpassed expectations many times over. They can absorb many harsh impacts while still maintaining tension and structural integrity.

Rim technology.

bicycle wheel rim


GULO MTB rims come from the highest quality molds and process our factory has ever designed. Because of the super-advanced resin system and mold design, they come straight out of the molds in a finished state. No wet sanding, imperfections, or topcoat. This contributes to excellent wear and scratch resistance on our highest quality rims. GULO MTB rims are laid up with a blend of premium Japanese Toray T700 and T800 carbon fiber. They include spoke hole reinforcements for strength and ultimate weight reduction. The rims are finished with a new permanent type of decal that is cured in place and will not peel, chip, or scratch like traditional sticker decals. All rims are tubeless compatible and should seal up with just a floor pump.

gulo gmd-27-wheelset
gga sl gulo wheelset


GULO gravel wheels; engineered for gravel, dirt, road, and everything in between. Weighing in at an exceptionally lightweight, our gravel wheels are responsive and compliant, making for an extraordinarily comfortable ride. The combination of the Composite G-Spokes and our premium Japanese Toray T700 carbon fiber gravel rims make this our secret weapon. Custom decals are part of the package. Rim widths run from 22mm internal/hooked to 25mm internal/hookless. Try one of our gravel wheels and completely transform your experience on your gravel bike.


GULO Road rims all feature an aerodynamic profile that matches the most current trends in aero rim design. The wide internal width of our road rims allows for larger, more efficient tires to be used and create a tire profile which contributes to the overall aerodynamics of the wheel/tire system. GULO Road rims are constructed with premium Japanese Toray T700 carbon fiber. The rims are finished with a new permanent type of decal that is cured in place and will not peel, chip, or scratch like traditional sticker decals.

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oil slick hub


The GULO ETI (Easy Thread Interface) hubs serve as the perfect platform upon which to build our advanced wheel systems. They have been designed with matched-ERD spoke hole angles, so our GULO Integrated System (GIS) spokes leave the hub in a straight line and meet the rim where they were meant to. Our hubs feature a patented anti-bite freehub body, alternating 6 pawl drivers (3 pawls engaged at any time), and high-quality steel bearings. The hub shells are machined to extreme tolerances from super light 7075 aluminum alloy.