Spcycle Full Carbon Seatpost 27.2/30.9/31.6mm MTB Road Bike Seat Post Seat Tube Offset 20 Degree Mountain Bicycle Parts

The reviewer mentions the Spcycle Full Carbon Seatpost as part of their bike build, noting it was ordered as a set with the frame. They describe it as being made of T1000 carbon, which is considered relatively high-end and common for good Chinese bike frames. The seatpost is mentioned to be quite sturdy and standard for mountain bikes, though not super light. It comes in the size 31.6mm and was included with the frame purchase.