Specialized claims the 9th-gen Tarmac saves about 4 watts over the 8th-gen
if that's true, it's actually gotten more aero than the Y1RS, damn
Even compared to the S5 or Factor One it's only a 1.5-watt difference
Honestly the Tarmac feels almost too perfect
weight, stiffness, aero—nothing about it falls short
Kind of hoping other brands hurry up and do some R&D to actually compete