New lengths are 166/173/181/189 on the entire BMX/FX series. With the added rocker, they are the same functional length as the old ones however. The 181 skis like a 176 on firm snow.
Huh. So a 173 skis like a 168? Interesting. Is the 166 like the 160, too? Hm. I'd like to demo those. Doubt it will happen this season.