HED Jet RC4 Black Rim Brake Tubeless Wheelset

The HED Jet RC4 Black Rim Brake Tubeless Wheelset carries forward more than forty years of aero wheel development out of Roseville, Minnesota. HED has been hand-building the Jet series since 1984 — long enough that the design has influenced how the industry thinks about carbon-faired road wheels. The RC4 Black brings that lineage into a rim brake package built for modern tires and modern riding: an alloy rim bonded to a carbon aero fairing, tubeless-ready from the factory, and built around a wide internal profile that works with today's road tire standards. It delivers genuine aerodynamic performance without asking you to give up the consistent, predictable braking behavior rim brake riders depend on — no heat sensitivity, no temperature-dependent pad compounds, no anxiety on fast descents.

The hybrid alloy/carbon construction is central to what makes the Jet architecture work. The alloy braking track provides a stable, temperature-consistent surface that performs identically in summer heat and October rain, while the carbon fairing shapes airflow around the rim in ways a flat alloy profile simply cannot replicate. HED has been refining this construction for three decades, and the current RC4 Black is built to contemporary standards: a 21mm internal rim width — a measurement HED standardized on as far back as 2014, well ahead of where the rest of the industry eventually landed — paired with a 25mm external width that creates a smooth shoulder transition from tire to rim. That profile optimizes the tire's installed shape for lower rolling resistance and improved lateral stability, particularly noticeable at higher cornering speeds where a narrow rim causes the tire to balloon into an undesirable shape.

What sets the RC4 Black apart from both standard alloy wheelsets and full-carbon rim brake alternatives is HED's Turbine Braking Technology. The all-black braking surface uses a patented textured, machined pattern that increases grip between pad and rim in both wet and dry conditions. In dry conditions, the texture translates to more stopping power with significantly less lever effort — the difference between precise, modulated braking and clamping as hard as you can. In the wet, the textured geometry actively channels water away from the braking surface, maintaining pad contact where smooth alloy rims would hydroplane and pure carbon braking tracks lose bite. Riders who have dealt with the spongy, delayed feel of carbon rim braking in rain will find the RC4 Black a qualitative improvement, not a marginal one. It's the core reason the Black series exists, and it changes the calculus on what rim brake performance looks like.

Each wheel is hand-built at HED's facility in Roseville. The front uses a HED Sonic 515 hub laced radially with 18 straight-pull bladed spokes, weighing 700g — a focused build that minimizes rotational weight and responds cleanly to steering input. The rear Sonic 545 hub uses 24 J-bend bladed spokes in a 2-cross pattern at 905g, bringing total wheelset weight to 1,605g. Both hubs run sealed radial bearings, and the rear freehub is available in Shimano HG or SRAM XDR. Tubeless tape comes pre-applied from the factory with a maximum recommended pressure of 80 psi, and the set ships with valve extenders and quick-release skewers — everything needed to mount a tubeless setup without additional hardware. The combination of lower running pressure and a tubeless-specific tire that the 21mm internal width enables is particularly effective at smoothing out rough chip-seal and worn road surfaces without adding perceptible weight.

At $1,800, the Jet RC4 Black occupies the most practical position in the Jet Black lineup. Its shallower profile compared to the RC6 and RC9 options makes it genuinely versatile — manageable in crosswinds, comfortable across long days in the saddle, and effective on climbing days where the deeper sections would work against you. That makes it the right choice for riders who want a single wheelset covering road races, sportives, and regular training miles rather than a wheel optimized for flat, calm conditions only. For any rim brake road bike, these wheels represent a meaningful upgrade that doesn't require a new frameset or a change in braking system. HED backs them with a five-year limited warranty and a crash replacement program, so the $1,800 commitment comes with genuine long-term support from a company that has been building the same wheel for forty years and knows how to stand behind it.