Darimo Carbon Seatpost for Trek Speed Concept – Setback
Crazy fact: On a bike as aerodynamically resolved as the Trek Speed Concept, the seatpost remains one of the very few components where meaningful weight can still be removed without touching airflow — provided it’s engineered correctly.
This is where refined Speed Concept builds go next
The Trek Speed Concept is a purpose-built triathlon platform. Aerodynamics are locked in, fit ranges are defined, and structural margins are conservative to suit mass production.
Darimo approaches the Speed Concept seatpost from a rider-load perspective. Carbon is placed only where it contributes structurally, with no excess material added for universality or manufacturing convenience.
- ⚖️ Meaningful weight reduction
- 📐 Setback saddle position
- 🧵 Hand-laid carbon construction
- 🏁 Speed Concept specific design
This seatpost is designed exclusively in a setback configuration for riders who require a rearward saddle position to achieve correct hip angle, stability, and sustainable power in aggressive triathlon fits.
Fit note: “Setback” refers to effective saddle position relative to the post centreline. OEM Trek measurements and hardware configurations are not directly comparable.
What this seatpost is — and isn’t
This is not a comfort accessory, cosmetic upgrade, or mass-produced carbon tube. It’s a structural component built for experienced riders who understand fit, loading, and long-course demands.
Darimo seatposts are engineered to be ridden exactly as supplied. Cutting or modifying the post is not recommended and may compromise structural integrity.
FAQs
Is this seatpost specific to the Trek Speed Concept?
Yes. This seatpost is designed specifically for the Trek Speed Concept seatpost interface and is not a generic aero post.
Why is this seatpost only offered in setback?
The Speed Concept platform is designed around triathlon-specific rider positions, where a rearward saddle position is commonly required to balance hip angle, stability, and sustainable power output.
Is this equivalent to Trek’s OEM Speed Concept setback?
Not directly. Trek’s OEM Speed Concept seatposts use adjustable and reversible hardware, meaning setback varies depending on configuration.
Darimo defines setback by effective saddle position once installed, not by clamp hardware geometry.
Can the seatpost be cut to length?
No. Darimo seatposts are not designed to be cut. Altering the length may compromise strength and safety.
Is rider weight considered in the build?
Yes. Each Darimo seatpost is built to order based on rider weight and intended use to ensure correct stiffness and durability.