Seatposts
An incorrect or heavy seatpost can introduce flex under pedaling power, raise overall bike weight, and prevent fine saddle height adjustment — problems that affect both performance and comfort on every ride. ULLICYC Carbon Seatposts solve this with lightweight setback geometry and precision-clamp engineering that keeps your position locked through sprints, climbs, and rough terrain, making them the choice of custom builders who rely on a trusted brand for consistent quality. Browse the full range and order at the best price from the official store today.
ULLICYC Carbon Seatposts for Road and Gravel Builds
ULLICYC Carbon Seatposts are designed for riders and builders who understand that seatpost stiffness and mass directly affect power transfer and climbing efficiency on every ride. The lineup covers 27.2 mm, 30.9 mm, 31.6 mm, and 34.9 mm diameter standards, making these posts compatible with the full spectrum of road, gravel, and mountain framesets in current production. Length options of 300 mm, 350 mm, and 400 mm provide enough range to accommodate both short and tall riders with a minimum safe insertion depth maintained in all cases. Each post is available in zero-offset and 25 mm setback configurations, allowing the rider to optimize knee-over-pedal position without relying solely on saddle rail adjustment. Weight across the range runs from 155 g for the 27.2 mm zero-offset model to 210 g for the 31.6 mm setback variant — concrete numbers that help builders calculate total bike weight before assembly. The single-bolt saddle clamp design simplifies micro-adjustment in the field using a standard 5 mm hex key, reducing setup time during bike fitting sessions. These posts serve road cyclists chasing minimum weight, gravel riders who need reliable clamping on rough surfaces, and custom builders assembling performance-oriented machines from the ground up.