The proven Transfer seatpost gets lighter and tighter for 2021. Completely redesigned from the ground up, with improved serviceability, decreased weight, reduced length, and decreased insertion depth. Factory says it all. The best-of-the-best technology we have to offer is available in our Factory Series models with our buttery smooth, ultra-durable Genuine Kashima Coat. These products are World Cup proven.Diameter Sizes: 30.9 / 31.6Metric Sizes: 100mm / 125mm / 150mm / 175mm / 200mmPatent-pending clamp design dramatically reduces stack heightProven Transfer internals with even easier serviceability than 2020 model25g lighter than 2020 TransferNEW lightweight under-bar 1x lever design included1x lever is Matchmaker and I-SPEC EV compatibleUpdated designPlease note: Lever is not included and must be purchased separatelyReduced overall length and insertion depth:175mm, 30.6mm shorter than 2020 Transfer, 8.6mm insertion depth reduction150mm, 38.7mm shorter than 2020 Transfer, 15.5mm inser