Reynolds is treading on dangerous ground. The SDV66 C (spelled out: super deep V rim 66m clincher) is in direct competition with the ubiquitous Zipp 404 clincher. The SDV’s are built to rims of similar depth (58mm for the 404 and 66mm for the SDV66 C). They tip the scales at 1660 and 1650 grams, respectively and neither wheel set is available for less than two grand.

Despite the fact that the 404 clincher has an aluminum rim and the Reynolds brake track is carbon, both wheel sets are in the same weight class. They also both use exceptionally high-quality hubs and spokes. The SDV66s are strung up with DT Swiss Aerolite spokes and the Zipp are constructed with Sapim CX-Rays. The Reynolds wheels spin on DT Swiss 240 hubs and Zipp has designed its own top flight hubs (bonus points). Neither manufacturer cut any corners.

Since both wheel sets weigh the same and utilize equivalent hubs and spokes, the rim becomes the distinguishing factor. Usually, comparing a 404 rim to anything else is no contest, but the Reynolds rim has two advantages over the vaunted 404.

From frames to frame pumps, the bike industry just can’t seem to get enough of the black stuff, and carbon rims are just plain cool. The Reynolds SDV66 Cs combine the familiarity and rolling resistance characteristics of a clincher with the exotic appeal of a carbon rim.

The next time you go to a triathlon, take a look at the race wheels around transition. You’ll find almost as many mountain bikes as you’ll find race wheels made by someone other than Zipp. They have become omnipresent and for good reason. But it’s fun having a wheel that doesn’t blend into the (very distinguished) crowd of Zipp wheels.

Now here’s the bad news: Although the carbon brake track is cool, an aluminum braking surface is more practical. The Reynolds wheels brake like most other carbon rim wheels, including the offerings from Zipp. Although braking performance is acceptable, it isn’t as powerful, smooth or predictable as an aluminum rim.

Most importantly, the 404 is built to a toroidal rim. This all-important bulging shape mutes road vibration and reduces aerodynamic drag. The Zipp has it; the Reynolds doesn’t.

If the non-conformist in you can’t stomach riding the same race wheels as your training partners, the Reynolds SDV66 C will have you flying down the road with a grin on your face.

Overall: 8/10- A completely legitimate competitor to the 404 clincher

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Aaron Hersh is the Technical Liaison at Colorado Multisport in Boulder, Colorado. He has been competing in endurance sports for the last seven years. Hersh has a B.A. in Integrative Physiology from the University of Colorado, focusing on biomechanics.

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