HED Jet RC4 Pro Disc Brake Tubeless Wheelset

The HED Jet RC4 Pro Disc Brake Tubeless Wheelset is built to move between disciplines rather than stay locked into one. It's part of HED's Jet RC Pro Series, a disc brake, tubeless-ready lineup that carries the aerodynamic shaping of HED's time trial and triathlon wheels into a wheelset that also holds up to standard road racing and training. At $1,500, it's priced as a serious upgrade wheelset, and the construction backs that up: disc-specific hubs, wide tubeless-ready rims, and freehub compatibility built for riders who don't want to be locked into one drivetrain.

At the core of the Jet RC4 Pro is HED's Plus rim technology, a hybrid construction the brand introduced in 2014 that bonds a carbon aero fairing to an alloy rim bed. The approach lets HED shape the rim for aerodynamics without relying entirely on carbon layup for structural strength, and it's a method the brand has carried across its Jet RC lineup for close to a decade. On the Jet RC4 Pro, that fairing is asymmetric: the front rim measures 38mm deep, while the rear runs deeper at 46mm. That split is deliberate — a shallower front rim cuts aerodynamic drag and crosswind sensitivity where a rider feels it most, while the deeper rear rim adds an aero benefit in a position that's more sheltered from side loads.

Both wheels share a 25mm external rim width and 21mm internal width, dimensions that reflect where road and tri wheel design has moved over the past several years. That internal width properly supports 25-32mm tires, giving tubeless setups a rounder profile and a more stable base than older, narrower rims allow. Riders can run the Jet RC4 Pro tubed or tubeless up to 80 psi, which means lower pressures are an option for anyone chasing a smoother ride on rough pavement or light gravel without giving up the rim's aero shape.

The wheelset is disc brake only, with Centerlock rotor mounts front and rear and a 12mm thru-axle at the front hub. On the rear, HED offers freehub compatibility across Shimano HG, SRAM XDR, and Campagnolo Ekar — a detail that matters more than it sounds, since it means a rider switching groupsets, or running different bikes with different drivetrains, doesn't need to replace the wheelset to match. Bladed steel spokes — 24 front and 24 rear — tie the rim to the hub, a build choice that favors durability and stiffness over shaving the last few grams, which fits a wheelset meant to handle race day and the training miles that lead up to it.

Total wheelset weight lands around 1,743 grams — 828g for the front wheel and 915g for the rear — putting the Jet RC4 Pro in a reasonable range for a wheel built to prioritize aerodynamics and durability over all-out lightness. HED markets this wheelset toward triathletes, time trialists, and road racers, and the shallower front, deeper rear depth split lines up with how those riders spend their time: long stretches in the aero bars or on the hoods, chasing speed over instability. The disc brake platform, tubeless compatibility, and wider tire clearance also make it a reasonable choice for endurance road riding or a road bike that occasionally sees gravel.

HED has hand-built its wheels in Minnesota since 1984, and the Jet RC4 Pro reflects years of iteration on a formula the brand has stuck with: alloy-carbon hybrid rims, disc-specific engineering, and a focus on wheels that hold up to real use. For a rider who wants a single tubeless, disc brake wheelset that can move between a TT bike, a road bike, and a long training day, the Jet RC4 Pro covers that range without asking for a compromise on any one of them.