Dahon BioLogic™ Suspension seat post

810 grams, 48 cm ( or almost 19 inches) from the bottom of this seatpost to the larger dia adjuster-ring
Suspension is a good thing - especially on small wheel bikes with high pressure tyres. Our BioLogic™ seat post lets you float above the holes, bumps, and ruts in the road. The suspension mechanism is a special low-profile design to keep the folded size of the bike to a minimum. In addition to a striking forged clamp, the BioLogic™ seat post features adjustments for pre-load and side play. 34mm diameter.