GGA 38 gulo gravel aero wheelset

GRAVEL ALLTERRA SERIES

GGA 38

AERO GRAVEL

GGA 38s are our rip-roaring aero wheels. Gravel riding is entering a new era, with speed and aerodynamics becoming synonymous with gravel riding and racing. The GGA 38’s ride like butter yet handles the burliest of gravel. We created a wheelset to help those pushing their limits to go from surviving to thriving.

WHEELSET

$2550

*Pricing is for Standard Steel Bearing

SPECS
OPTIONS
  • Hookless rim | Tubeless only
  • 1307g wheelset (600g front/707g rear)

  • 38mm carbon rim depth
  • 25mm internal rim width

  • 32mm external rim width

  • 28-50mm recommended tire size
  • 30-32mm aero optimized tire width
  • 700c wheel size

  • Center-lock disc only
  • Carbon Composite G-Spokes (24)

  • Tubeless tape & valves included
  • Not compatible with rim brakes

 

Gulo GGA SL wheels
GULO RIMS

38m deep rims give you that aerodynamic advantage when it counts. The 25mm wide rims give you the ability to run up to a 50mm tire of taking on everything the terrain throws at you. And the G-Spoke provides the Gulo standard in ride quality you will feel with the first pedal stroke.

hookless rim cutaway
GGA 38 int ext rim
gulo gga 38 gravel wheelset
GULO SPOKE
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GULO G-SPOKES

The Gulo G-Spoke is a triaxially braided composite featuring Ride Smooth Technology (RST). We engineered RST utilizing custom braid angles that consist of a blend of materials, all uniquely chosen for comfort, strength, and stiffness. In developing this spoke, two main goals were at the forefront: lightweight and impact resistance. The G-Spoke was formulated to absorb massive impacts without failing. At the same time, it will retain tension for much longer than traditional steel spokes at 40% of their mass. The G-Spoke remains one of the lightest spokes ever produced while achieving exceptional impact resistance.

gulo g1 spokes
Hub
GULO HUBS

Gulo's hubs are the foundation of our system wheels. The Easy Thread Interface (ETI) hub allows the G-Spoke to pull in a straight line, joining the rim as it naturally should, creating less stress and more durability, with a longer lifespan than many more traditional wheels. Our hubs feature our patented "anti-bite" freehub body. With six pawl drivers (alternating in sets) and high-quality steel bearings, the system hub for the Gravel AllTerra Series has 48 points of engagementin a machined 7075 aluminum alloy shell. Easily swap drivers with a couple simple tools.

Varying axle configurations are available, with QR adapters offered for those running classic QR axles.

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In a long gravel race, there are plenty of things that can make your day go one way   or another, and Gulo’s AllTerra GGA 38 gravel wheel is the obvious choice when you’re looking to stack the odds in your favor. The Gulo Integrated System brings it all together. Lightweight and durable are givens. Add in incredible compliance to stave off the fatigue that a long day in the saddle brings, plus the incredible aerodynamics of the 38mm deep sectional rim, and you’ve come prepared to ride at full tilt.

Brian G.

I have to admit I was skeptical that a wheel set could exist that checks the amount of boxes that my GGA38's do but I was shocked from the very beginning just how good these are!The Gulo's are noticeably stiffer/more stable in the lateral and longitudinal planes - especially when out of the saddle climbing or under hard braking - yet somehow also the smoothest and most comfortable wheels i've ever ridden. They seem to magically iron out every ounce of chatter on the road. "

Articles

gravel road going thru forest

Ride Smooth Technology

Is Ride Smooth Technology antivibration? While most carbon spokes increase damping, the Ride Smooth Technology(RST) used in the G-Spoke focuses on compliance and comfort while maximizing stiffness and strength. We…

Why Carbon Spokes?

Why are carbon spokes growing in popularity? Why are carbon spoke bicycle wheels becoming so popular? There is a strong association between high-end performance and carbon fiber. Almost all high-end…

Tubeless and Non-Tubeless Tires Explained

Tires can make the difference For avid cyclists and mountain biking enthusiasts, the choice of tires can mean the difference between a smooth, thrilling ride and a frustrating trailside repair…

Specs

Rim: Hookless |Tubeless only

Set Weight: 1307g

Front Weight: 600g

Rear Weight: 707g

Rim Depth: 38mm

Internal Rim Width: 25mm

External Rim Width: 30mm

Recommended Tire Size: 28-50mm

Aero Optimized Tire Size: 30-32mm 

Wheel Size: 700c

Rotors: Center-lock disc only

Spokes: G-Spokes (24)


Included: Tubeless tape & valves

Not compatible with rim brakes

Support

If you have questions about your wheels please call:
(828) 966-3351
or email info@gulocomposites
and we will get right back to you.

Visit our Service Guide page for more help.

I broke spoke

If you break a spoke, we will replace it, no questions asked.* If you would like to send your wheels in for service, our team at the Gulo Wheel House will replace your spoke(s), free of charge, not including shipping fees. If you prefer to have your professional mechanic replace the G-Spoke, we will send one out at the cost of shipping only. *Gulo Composites guarantees our G-Spokes for life to the original, registered owner. 

Return Policy Gulo Guarantee
30-Day Money Back Guarantee

We stand by our wheels 100% and are confident that you will be satisfied, if not ecstatic, with your purchase. That is why we offer a 30-day money-back guarantee. You may return your wheels for a full refund within thirty days of purchase. It's that simple.

Gulo will provide a return shipping label for every wheel(s) purchased. Returns must include the original box and/or packaging to help guard against damage in shipping.

If a refund is requested, the refunded amount will be credited to the original payment method you used at the time of the purchase. A refund usually appears on your account within ten days but can take up to 30 days, depending on your bank.

The used but undamaged wheel(s) or product can be returned within 30 days. However, we cannot accept returned products if they have been damaged or involved in a crash.

Warranty

The Gulo Composites Warranty

Do you intend to drop the hammer, grind gravel, or shred the gnar? Then you've landed in the right place. But rest assured, if you land in the wrong place, we've still got you covered.

Gulo Composites has engineered, designed, and tested our products under the most rigorous conditions so you can ride with confidence. We are so confident in our wheel systems that we offer them a lifetime limited warranty and generous crash replacement policy, as well as an unlimited replacement policy on our composite spokes.

At the end of the day, our intention is to make sure you, the customer, is taken care of. If your Gulo Wheel System develops any unforeseen issues, we will err on the side of the customer and get you back on the bike promptly. There are certain events, such as crashes, rock strikes, vehicle-related incidents, which we can not be responsible for. But even in these instances, we intend to offer you the best service possible.

Please read on for more detailed information concerning the warranty of each component.

G-Spokes
Lifetime Unlimited Warranty

Break a spoke? We will replace it. No questions asked.
At the core of the Gulo Composites wheel system is the G-Spoke, which is designed, engineered, and manufactured all under one roof in Brevard, North Carolina, USA. We are extremely confident and proud of this product and want you to be as well.
Gulo Composites guarantees our G-Spokes for life to the original, registered owner. If you break a spoke, we will replace it, no questions asked. If you would like to send your wheels in for service, our team at the Gulo Wheel House will replace your spoke, free of charge, not including shipping fees. If you prefer to have your professional mechanic replace the G-Spoke, we will send one out at the cost of shipping only.

Gulo Carbon Composite Rims
Lifetime Limited with Crash Replacement Plan

Gulo Composites warrants our carbon composite rims to be free from defects in materials and workmanship for the expected product life to the original, registered owner. If your rims develop any problems outside of normal wear and tear, send your wheels back to the Gulo Wheelhouse and we will repair or replace any parts that do not conform to our quality specifications. Replacements will be with the current similar components.
Crash Replacement - Did you miss a landing, hit a pothole, or forget about the bikes on the roof of your car when pulling into the garage? These types of incidents can leave you in dire straits on the trailside or road, or with expensive home repair bills. We intend to ease that pain and get you rolling again.
Gulo Composites will replace any damaged or broken carbon composite rim one time for the original registered owner for the cost of $400. This includes professional wheel rebuild by the team at the Gulo Wheel House.

Gulo Hubs

Lifetime Limited with 1-year free bearing replacement & free service
Gulo Composites warrants our hubs to be free from defects in materials and workmanship for the expected lifetime from the date of purchase for the original, registered owner. This warranty does not cover wear and tear items such as axles and freehub bodies. We do offer a 1-year free bearing replacement. If you develop abnormal bearing wear or play within the first year of use, we've got you covered free of charge. If you are outside of the first year of use, we will still service the hubs for free, and only charge for materials.

Replacement

G-Spoke Replacement Policy

Break a spoke? We will replace it. No questions asked.

At the core of the Gulo Composites wheel system is the G-Spoke, which is designed, engineered, and manufactured all under one roof in Brevard, North Carolina, USA. We are extremely confident and proud of this product and want you to be as well.
Gulo Composites guarantees our G-Spokes for life to the original, registered owner. If you break a spoke, we will replace it, no questions asked. If you would like to send your wheels in for service, our team at the Gulo Wheel House will replace your spoke, free of charge, not including shipping fees. If you prefer to have your professional mechanic replace the G-Spoke, we will send one out at the cost of shipping only.
Gulo Carbon Composite Rims

Crash Replacement Policy

Gulo Composites warrants our carbon composite rims to be free from defects in materials and workmanship for the expected product life to the original, registered owner. If your rims develop any problems outside of normal wear and tear, send your wheels back to the Gulo Wheelhouse and we will repair or replace any parts that do not conform to our quality specifications. Replacements will be with the current similar components.
Crash Replacement - Did you miss a landing, hit a pothole, or forget about the bikes on the roof of your car when pulling into the garage? These types of incidents can leave you in dire straits on the trailside or road, or with expensive home repair bills. We intend to ease that pain and get you rolling again.

Gulo Composites will replace any damaged or broken carbon composite rim one time for the original registered owner for the cost of $400. This includes professional wheel rebuild by the team at the Gulo Wheel House.

Gulo Hub and Bearing Replacement Policy

Lifetime Limited with 1-year free bearing replacement & free service.

Gulo Composites warrants our hubs to be free from defects in materials and workmanship for the expected lifetime from the date of purchase for the original, registered owner. This warranty does not cover wear and tear items such as axles and freehub bodies.

We offer a 1-year free bearing replacement. If you develop abnormal bearing wear or play within the first year of use, we've got you covered free of charge. If you are outside of the first year of use, we will still service the hubs for free, and only charge for materials.