Product details:

The new SL-K SBS SB20 seatpost is lighter and stiffer than ever just 221 grams for the 27.2 x 350 mm length. Using a UD carbon shaft with a bonded alloy head and a sophisticated MTC clamp design, FSA has created the finest SL-K seat post yet. Features UD Carbon shaft with bonded alloy head. Forged alloy Top Clamp. Chromoly Hardware. UD carbon finish. Black graphics. Compatibility: WE/Di2. Seatback Interval: 20. Minimal insertion: 100 mm. Technologies SBS (Side by side seatpost clamp) Full Speed Ahead's SBS seatpost clamp combines safety and security with elegant aesthetics. MTC (Minimal top clamp) FSA's Minimal Top Clamp seatpost head adjusts easily and securely and reduces the amount of material for weight savings of up to 30 grams over other FSA seatpost models.