Corima’s MCC carbon spoked wheels get new hubs and the front wheel gets new, flatter spokes. That makes it a bit more aero at the leading edge of the bike, but the rear keeps round spokes to be stiffer since fewer gains were to be had there. The pic above shows the transition from round at the hub to flat for the majority of their length
The front hub is a little sleeker, without as much flare from the shell to the flanges, reducing the overall frontal footprint. They also switched it from woven to UD carbon, just like the rear…
The rear hub gets a similar cosmetic change, plus a few internal tweaks:
Shown here on a different wheel, the MCC models upgrades to the S-type axle and internals. That gives it a wider alloy axle through most of the freehub bodies, reducing down only at the end to fit a larger bearing.
The MCC has thus far been a tubular only, but for 2015 they’ll have a clincher option weighing in at just 1,260g for the pair. Price was TBD, but if you have to ask…then the alloy hubbed versions might be more up your alley.
The S+ wheels, which use standard spokes, have switched from J-bend spokes to straight pull. That saved them a few grams, but it was mainly a change based in customer demand.