With the same 20mm of ride-extending compliance as the original, the new eeSilk seatpost adds several design improvements for increased lateral stability and is available in carbon or alloy designsSeatpost comes with medium elastomer installed with softer and firmer replacement options available from Cane CreekForged and machined aluminum arms with 20mm of travel for comfort and small bump complianceAvailable in 27.2 or 31.6mm options with shims available from Cane CreekCompatible with elastomers from previous model yearsMaximum recommended rider weight 250lbsMax extension 250mm27.2mm353mmBlkCrbn0mm300g