27.2mm

Descriptions: Brand: RXL SL Material:Carbon fiber Weight: Around 230g (different size different weight) Length: 400 mm Diameter: 27.2mm Appearance: 3K Matte/Glossy Precautions: As the frame seat is 27.2mm, need to buy less than 27.2 caliber seat post to install; We produced all the seat tube diameter will be less than the size of the label; Seatpost Diameter is 26.8 ~ 27.2mm Used in frame seatpost 27.2mm; Seatpost Diameter is 30.6 ~ 30.8mm Used in frame seatpost 30.8mm; Seatpost Diameter is 31.4 ~ 31.6mm Used in frame seatpost 31.6mm; Some customers to buy the frame seatpost diameter is not standard, resulting in the seatpost can not be installed, please be sure to check，The seatpost needs to be properly secured using the seatpost clamp.