GGA 38

$2,345.00

Smooth is fast. So is versatility.Smooth is fast. So is versatility.

The GGA 38 balances aerodynamic intent with the tire capacity serious gravel riders need. Its 38 mm carbon rim and G-Spoke braided composite spokes are built to keep the ride responsive while reducing the chatter of long, fast mixed-surface efforts. Handbuilt in Brevard, North Carolina.

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Bearing Type
Hubset

Pickup available at 33 W Probart St

Usually ready in 24 hours
5-Year Performance Warranty

Built to Be Ridden. Backed to Be Trusted. At Gulo, we build wheels to perform at the highest level—and we stand behind them with a warranty designed for real riders, not fine print.

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G-Spoke Technology

Our G-Spoke with Ride Smooth Technology represents a significant advancement in bicycle wheel technology. The use of composite materials with our advanced triaxial braiding techniques offers distinct advantages over traditional metal spokes by reducing vibrations. This gives bike riders enhanced control, comfort, and performance.

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Tech Specs

Riding CategoryGravel Aero
Rim Internal Width25 mm
Rim External Width36mm
Rim Depth38 mm
Rim Construction700c carbon; hookless; tubeless only
Recommended Tire Width28–50c
Spokes24 G-Spoke braided composite spokes
Hub OptionsGulo ETI Ratchet; Industry Nine Solix
Wheelset WeightGulo ETI Ratchet: 1,208 g; Industry Nine Solix: 1,263 g
Have questions? Feel free to contact our tech reps.

Find the fast line. Keep the smooth one.

At 38 mm deep, the GGA 38 gives gravel riders a more aerodynamic-oriented profile than the shallow GGA SL while stopping short of the ultra-wide GGA 44 design. It suits riders who want to carry speed on exposed roads and fast gravel without building their entire setup around maximum tire volume.

Aero intent without an extreme profile

Gravel speed depends on staying composed when the surface turns inconsistent. G-Spoke braided composite spokes help absorb vibration while preserving lateral response, supporting a smoother feel through chatter and washboard. That ride character matters on long events where comfort, steering precision, and sustained effort all contribute to performance.

Ride quality for the rough miles

The GGA 38 pairs a 25 mm internal rim width with a published 28–50c tire recommendation, giving riders options across fast gravel and suitable road use. Its hookless rim is tubeless-only, so tire and pressure compatibility must guide setup. The design targets riders who want adaptable speed rather than one narrow tire configuration.

Tire flexibility for mixed-surface speed

The difference is in the G-Spoke.

Traditional wheel construction isn't the only way forward.

At the heart of all Gulo Wheels are G-Spoke braided composite spokes — engineered to combine vibration absorption, lateral stiffness, and impact strength in one distinctive wheel system.

Each spoke features a proprietary braided composite construction with titanium ends. Paired with carbon rims selected to complement the G-Spoke's performance, the result is a complete wheel engineered to work together.

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The balanced aero gravel choice

Choose the GGA 38 for fast gravel and mixed-surface rides where rim depth, moderate tire width, and low weight all matter. The GGA SL is shallower and more weight-focused; the GGA 44 uses a wider 30 mm internal rim and 44 mm depth for larger tires and a more specialized ultra-wide aero approach.

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Engineered as a system. Built by hand.

Matched carbon rims. G-Spoke braided composite spokes. Premium hub options.

Every Gulo wheelset is handbuilt at the Gulo Wheelhouse in Brevard, North Carolina, bringing advanced composite engineering and hands-on craftsmanship together.

Built for riders who notice the difference.