Rewrite the Rules of Speed.

For years, racers have been forced to make a calculated sacrifice on race day. Go lightweight for the climbs, or go deep aero for the flats and crosswinds.

We engineered the Red Crown Diadem 50 to eliminate the choice entirely.

By pushing the boundaries of custom carbon architecture, we created a wheelset that tips the scales at an astonishing 995 grams, while maintaining a wind-slicing 50mm rim profile and a modern, wide stance. Whether you are hunting a mountain summit or hammering a flat Ironman bike leg, the Diadem 50 delivers unparalleled, category-defying speed.

1. Sub-Kilo Acceleration

At just 995g (±15g) for the set, the Diadem 50 moves effortlessly into "super-wheel" territory. By shedding critical rotational mass, it delivers explosive acceleration out of corners and snappy responsiveness the moment the road points upward.

• Front Wheel: 453g

• Rear Wheel: 542g

2. Aero-Optimized Stance

True aerodynamic performance is about how the wheel interacts with the tire. Featuring an expansive 30mm external width and a 25mm internal width, the Diadem 50 is specifically optimized for modern 30mm–32mm rubber, creating a seamless, low-drag profile that dominates real-world crosswinds.

3. Ultimate Power Transfer

Built with custom-made, bladed straight-pull carbon spokes (18 front / 20 rear) laced to a high-engagement, ultra-low friction ratchet-based hub, every watt you produce is instantaneously converted into forward momentum. Equipped with premium ceramic bearings standard.

Masterpiece Specs

Built to Perform. Backed for Life.

A premium investment demands premium peace of mind. The Diadem 50 isn't just a fragile race-day luxury; it features a robust 220 lb max system weight limit and is engineered to handle real-world roads, grueling training blocks, and high-speed descents.

• Lifetime Warranty: Covered against manufacturing defects for the original owner.

• Masterpiece Crash Replacement: Because race crashes and potholes happen, we offer a flat-rate $600 rim replacement program to keep your investment rolling safely.

• The Premium Unboxing Experience: Every wheelset includes premium tubeless rim tape and a tubeless valve stem.

Claim Your Serial Number.

The first 50 Diadem 50 wheelsets shipped worldwide will feature a physically serialized engraving (e.g., 01/50). Secure a piece of Red Crown Cycling history and experience a ride entirely free of compromise.