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AG48 Disc: The Dawn of the Aero-Gravel Revolution

It’s Crazy. It’s Real. It’s the Future.

Three years ago, when we first introduced the WG44 and WG55 gravel wheels, some said we went too far. We were told that gravel wheels didn't need such extreme widths to optimize aerodynamics. Today, those "oversized" wheels are among the most sought-after gravel racing components on the planet. At Light Bicycle, we don't just follow trends; we're at the leading edge of setting them. As gravel racing evolves toward 45c, 50c, and even 2.1" and 2.25" tires, the equipment must evolve or become obsolete. Working with world-class aerodynamicists and visionary riders, we are pushing the boundaries once again, introducing the new Aero Gravel AG48 disc wheel.

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The Science of "Ultra-Wide"

The AG48 disc is born from the demands of elite riders and aerodynamic experts who realized that to win today’s races, you need more than just a "standard issue" gravel wheel. You need a wheel that pushes boundaries to maximize every possible aerodynamic advantage. With its massive 35mm internal and 48mm external profile, the AG48 disc turns this concept into a reality. The result is a larger tire contact patch that boosts grip and eliminates power loss, turning the technical demands of the trail into a rhythmic flow of speed and control.

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Pocket the Watts

The AG 48 disc is where aerodynamics meet the realities of modern gravel, built on a promise: pure speed everywhere. It is the fastest gravel wheel ever built. Our ultra-wide rim profile is the definitive answer to modern gravel trends, ensuring the wind stays ‘attached’ to the rim’s surface. We have optimized the tire-to-rim interface to ensure the wind stays your ally, turning every marginal advantage into a definitive lead.

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Orchestrating Airflow

Engineered around the "105% rule", the AG 48 disc is a perfect match for 45c tyres. Its sophisticated U-shape profile curves inward at the bead to center the rim’s widest point. This strategic design masters airflow exactly where it matters most, delivering superior stability and a competitive edge in crosswinds.

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Weight? We Thought of That.

A common concern with ultra-wide rims is the weight penalty. Through our advanced Flyweight layup and meticulous carbon engineering, we’ve pushed the boundaries of what’s possible. We’ve targeted a weight of approximately 460g (standard) for this massive profile, achieving a strength-to-weight ratio that ensures you’re as fast on the climbs as you are on the flats.

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Leading the Trend. Again.

" We are setting the trend as the leader in the wide gravel movement. This is for the riders who refuse to be limited by yesterday's standards."

— Light Bicycle Research & Development Team

From the dirt roads of Unbound to the technical descents of the Rift, the trend is clear: Wider is Faster. While others debate whether 40mm is too wide, we're busy providing expertly engineered tools for those who want to lead the pack on 45c tires. It may look crazy today, but just like the WG44, WG55 before it, this is the new reality of gravel performance.

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Specs Overview:

Model: AG48 Disc

Rim Width (INT/EXT): 35/40mm

Depth: 48mm

Tubeless Capable: Yes

Finish: Paintless

Weave: UD Carbon

Weight: 460+/-15g

Recommended Tire Width: 45C-50C

Hole: 24H

Build Now
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Model: AG48 Disc

Rim Width (INT/EXT): 35/40mm

Depth: 48mm

Tubeless Capable: Yes

Finish: Paintless

Weave: UD Carbon

Weight: 460+/-15g

Recommended Tire Width: 45C-50C

Hole: 24H

Build Now

The AG48 isn’t just an evolution; it’s a reckoning. Join us today and lead the pack with AG48 disc.

May 14th, 2026 | Light Bicycle

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