Joined: Dec 2004
Posts: 12,560
Likes: 799
From: Middle of da Mitten
Bikes: Trek 7500, RANS V-Rex, Optima Baron, Velokraft NoCom, M-5 Carbon Highracer, Bacchetta Quattro, Catrike Speed
The "3K" is just the cosmetic outer layer. The inner layers will be made of whatever they make inner layers out of.
Just a thought. Carbon is strongest in tension. Seatposts bear their loads in compression. Don't go light.