Spinergy calls their new GXX gravel bike wheels the “King of Gravel” – adding an extra X to their previous gravel wheel options. And building on three decades of experience with their tough, vibration-damping PBO composite spokes and carbon rims, the US-made gravel wheels look promising with a pricetag under a thousand dollars!
Spinergy GXX composite spoke, wide carbon gravel wheels
Putting it simply, Spinergy’s synthetic polymer PBO spokes are 3x the strength of steel at half the weight (1.6x the tensile strength of Kevlar even) which is said to virtually eliminate the possibility of breaking spokes. Spinergy even says that they absorb vibrations better, so gravel riders are less fatigued over longer rides and have improved control over irregular riding surfaces.
Spinergy GXX carbon – Tech details
Tie that together with a new wider 24mm internal carbon rim that Spinergy produces in-house in southern California (a whopping 6mm wider than their previous GXC wheels) to fit 40mm up to 57mm wide tires.
The 29mm deep, 29mm wide external full carbon, hooked tubeless-ready rim is molded over a lightweight solid foam core. Spinergy claims that foam core both adds strength to the overall lightweight construction and prevents water from getting inside the rim cavity.
The GXX wheels use their own CNC-machined alloy hubs to radial/2X lace the 24 straight-pull composite spokes. The centerlock disc hubs get sealed cartridge bearings, interchangeable endcaps to fit most standards (QR, 12mm & 15mm thru-axles) and are compatible with Shimano HG, MicroSpline, SRAM XD, XDR & Campagnolo freehub bodies.
GXX carbon – Pricing
The 700c only Spinergy GXX wheels have a claimed weight of 1525g for the pair (up 30g from the more narrow GXC, and are said to start at just $999 a pair in black with the single Spinergy Edition red spoke & graphics. A hundred pairs of GXX Special Edition wheels will also be available for $1200 with gold anodized hubs, matching gold graphics, a ceramic bearing upgrade and padded wheelbags.
Spinergy is also set to offer the GXX wheels in their custom color options as well, where you choose from red, green, orange, yellow, blue, pink or purple and they match painted composite spokes & rim decals.