We can see the ENVE SES 6.7 Tubular wheelset fast becoming a favorite among racers. The aerodynamics are great for flat to rolling races, and with the tubular construction, the wheel is light enough to accelerate easily and hold its own in hilly to mountainous races.
One thing all racers like is durability. Fragile gear can be heart-breaking; nobody wants to see a great day on the bike ruined by an errant pothole. ENVE, as a composites company, makes benchmarking strength an essential part of their development process. These wheels can do double-duty as 'cross wheels; a year-round wheelset that is hard to destroy is tough to beat. Besides knowing how to lay up and mold carbon, they also understand what small things can reduce strength. This is why they mold spoke and valve holes, rather than cutting them, and rely on internal nipples rather than external. The internal nipples aren't only about strength, but also aerodynamics, as having the nipples exposed adds drag.
The aero thinking on these wheels is thorough. The rims are wide, 26mm in front and 24mm in rear, and when combined with a blunt leading edge and near vertical sides, the rims have slippery profiles throughout the range of yaw angles that can affect speed. The depths are position-specific, with a 60mm front, for better crosswind stability, and 70mm rear for better aerodynamics because steering isn't affected. The position-specific depths and great shaping share an extra benefit; stability. ENVE was determined to make their wheels behave well in variable crosswinds, and as such, tuned the shapes so they provide a low, linear response to side forces. They say this depth is good for experienced riders in all conditions and novice riders on less windy days, whether you're riding them for a short time trial or all-day event.
Wide rims seem to go faster, both because of lower rolling resistance and better aerodynamics. These wheels seem to go fastest with tires in the 22-23mm range, though wider can work as well. The width has an extra advantage in that it gives greater gluing surface, which both holds the tires better, and means the glue is harder to overheat in heavy braking. Overheating is a serious issue with carbon wheels. Tubulars are harder to overheat, and with ENVE's lay-up, overheating should be a thing of the past.
As we wrote above, system thinking is what ENVE is doing here. As such, the wheels come with ENVE brake pads. Use them for great performance and to make sure the warranty applies. The wheels also come with ENVE's titanium-shafted skewers.
The ENVE 6.7 rims are laced with DT Aerolite spokes, 20 radial front, 24 two-cross rear, to your choice of hub sets. One is Chris King's R45 Ceramic-bearing hubs. The other is DT Swiss' 240 hubs. Both hub sets have the option of cassette bodies for either Campagnolo 9/10/11 or SRAM/Shimano 10/11 cassettes (and you can buy extra bodies to swap easily). The Chris King set weighs in at 1453g, the DT Swiss at 1468g.
ENVE doesn't job out their rims to some anonymous factory overseas. They're built in Utah, a fact they want to accentuate by not only having a five-year warranty on their products, but they also a lifetime crash replacement policy where they'll replace any destroyed ENVE product for 50% of MSRP, provided the customer has the paperwork to prove original ownership.
The ENVE SES 6.7 Tubular Wheelset is where speed matches up with lots of power.