Lightweight Fernweg 63 EVO Pro Disc Wheelset

Few wheelset manufacturers are willing to abandon convention entirely. Lightweight, the German brand based in Friedrichshafen, has made a habit of it. The Lightweight Fernweg 63 EVO Pro Disc Wheelset is their vision of what a 63mm aero disc wheel should be when you strip away every component that doesn't serve performance: 1,565g of carbon at 63mm depth, built with no nipples, no spoke threads, and no mechanical connectors between rim and hub.

The defining technology is R2R — Rim-to-Rim — Lightweight's proprietary spoke design. In a conventional wheel, spokes thread through a hub flange and connect to the rim via nipples. Under repeated load, those threaded connections work loose, spoke tension drifts, and the wheel requires regular truing. R2R eliminates that failure mode by replacing the entire spoke-and-nipple system with continuous carbon fiber strands that run from rim to rim in a single, uninterrupted path through the hub, bonded permanently with a high-performance adhesive. There are no fatigue points, no tension loss over time, and nothing to re-tension or true. The wheel performs identically after years of riding as it did on the first.

The Pentagon SL hub advances the system further. Its polygonal contact geometry transfers torque more directly than a round hub shell, and the redesigned construction saves 70g per set over the previous generation — weight removed from the hub, where rotating mass has more leverage on feel and acceleration than the same grams saved at the rim. CeramicSpeed bearings come standard in the RA Cycles configuration, adding low-friction rolling to a hub already built for efficiency. The rims are formed from LCC — Lightweight Custom Composite, the brand's proprietary carbon formulation — with layup engineered specifically for the structural demands of a 63mm aero profile, not adapted from a shallower design.

Design Benefits

1. R2R eliminates spoke tension variation — Conventional spokes lose tension as threaded interfaces work loose under load. R2R's bonded, continuous carbon fiber strand design has no mechanical connection to loosen, no nipple to back out, and no fatigue accumulation at the spoke-to-rim junction. The practical result: the wheel stays true with no intervention required over the life of the rim.
2. 63mm at 1,565g — A 63mm carbon rim at this weight delivers real aerodynamic return without the rotational inertia penalty that makes deeper wheels sluggish in accelerations and on climbs. The Pentagon SL hub's 70g weight reduction per set contributes directly to that figure.
3. CeramicSpeed bearings as standard — Lower rolling resistance than steel bearings, with longer service intervals under most riding conditions. The RA Cycles configuration includes CeramicSpeed throughout the Pentagon SL hub and freehub.
4. 18.2mm internal width — Designed around modern road tire standards, the wider internal dimension allows a 25mm tire to take on a more aerodynamically favorable profile and improved air volume at the same inflation pressure, without the added weight of a wider rim construction.

Final Take

The Fernweg 63 EVO Pro Disc is a wheel for riders who have thought carefully about what they want and arrived at: maximum aerodynamic performance, minimum maintenance, and construction that holds its performance year over year. The 63mm depth delivers speed where aero wheels earn their keep — flat roads, rolling terrain, crosswind sections. R2R means no spoke care, no re-truing, no progressive performance degradation. At this level, you're paying for an engineering approach that most wheelset manufacturers have never attempted, and a product built to last as long as the frame it's on.