- Highly-tuned and flexible carbon fiber composite leaf spring design reduces road shock and absorbs vibration - The defined flex allows a maximum of 20mm of leaf spring travel with zero lateral twist - Floating Flip Head keeps saddle level during compression and can be rotated to achieve the perfect fore/aft position - Designed for round saddle rails up to 7mm diameter - Not shimmable, designed for 27.2mm seat tubes - Not compatible with Di2 seatpost mounted batteries - Min/Max insertions depth = 110mm/ 210mm - Max rider weight is 100kg - 240g