Looking to smooth out rough roads and gravel chatter without adding weight or complexity to your build? The DCB S300 CF Allroad Pro Style Carbon Flex Seatpost delivers performance-focused comfort in a clean, lightweight carbon design inspired by leading flex-post technology.
Engineered for endurance road, gravel, and allroad bikes, the S300 CF uses a tuned carbon layup to provide controlled vertical compliance while maintaining lateral stiffness for efficient power transfer. The flex zone is designed to absorb high-frequency vibrations and small impacts that cause fatigue on long rides—helping you stay comfortable, efficient, and in control.
Whether you're racing gravel, tackling broken pavement, or building a premium allroad setup, this post adds real-world comfort without the weight penalty of suspension seatposts.
The matte carbon finish pairs perfectly with modern frames, and titanium hardware keeps weight low while ensuring secure clamping. Dual compatibility for 7mm round rails and 7x9mm oval carbon rails (both half-shells included) makes it easy to pair with high-end saddles.
Built for performance. Tuned for comfort. Designed for long miles.
Specifications
Clamp Diameter Options: 27.2mm / 30.9mm / 31.6mm
Setback Options: 5mm or 25mm
Saddle Rail Compatibility: Ø 7mm round or 7x9mm oval (carbon half-shells included)
Lengths: 350mm or 400mm
Minimum Insert: 100mm
Material: Carbon
Finish: Matte
Screws: Titanium
Seatpost Max Locking Torque: 5.5 Nm
Saddle Clamp Torque: 8–12 Nm
Max Rider Weight: 120 kg (265 lb)