The ENVE SES 6. 7 PRO Wheelset starts from a new UCI rule capping rim depth, using that limit as the reason to rebuild the rim shape from scratch. The result is a 59mm front and 65mm rear profile optimized around a 28mm tire, holding speed and stability at race pace without stepping outside what's legal on race day. What Our Gearhead(R) Experts Are Saying:"I trust this hub because the bearings aren't an off-the-shelf set bolted in. Outboard seals stay low-contact to keep debris out, and inboard seals stay non-contact to keep drag down, so each side does a different job instead of one compromise."