Disc-brake bicycles can be heavier than their rim-brake counterparts, but Seven’s XX option (a $995 upcharge on any disc-equipped SL or SLX frame) pares weight from 11 areas of the bike by using asymmetric chainstays, more aggressive bottom bracket machining, an internal seatpost binder, and more.
The weight savings add up to a claimed 15 to 20 percent. This titanium gravel bike tips the scales at 17 pounds, placing it in the realm of similar carbon bikes. But you get the durability of ti, and that exquisite ride. $5,255 (frameset), 17.0 lb., as tested (54CM).