Darimo T1 Loop Seatpost Aero/Not round


Looking for a not round seatpost for your top end bike?

Here you have the solution. Now you can change your original not round seatpost and remove weight in one of the most important places of the bike. The weight removed in seatpost and saddle is very important as it’s far from the ground, then the pendulum effect is reduced drastically.

The weight for this kind of not round seatpost is around 95 grams in 350mm lenght for the straight version, just ask.

The main post is made of carbon fiber using bidirectional and unidirectional fabrics with an studied asymmetrical laminate to achieve the optimum combination of minimum weight and maximum of resistance.

Each seatpost is laminated by hand to achieve a record weight keeping in mind the strength and your safety. To do this, at each point of the seatpost there are a different numbers and arrangements of carbon fiber layers. The layers arrangement is obtained after finite elements analysis and destructive testing.

The totally new dessigned clamping system for the straight versions is made with two ultralight Dyneema® loops. That makes a very important weight reduction on the head of the seatpost / clamping system. This system is good for all kind of rails, including carbon rails 7*9mm.

Finishing: Bright – Mat, Bidirectional (3k) or unidirectional (+4g), customizable colors.

Riders weight limit: The Darimo T1 Seatpost is safe and has passed the standard ISO 4210-2 tests, however it is not recommended for more than 90 kg. If you weight more than 90 kg we will reinforce it for you.

Price: 319 €

Use: Road, ciclo-cross and MTB.

Max. Length: 700mm.

Custom fabrication: Exact length, weight reduction > 5g.

Shapes avilable*:

-Specialized Tarmac SL7 Setback 15mm (369€)

-Specialized Allez Sprint 2022 Setback 15mm (369€)

-Specialized Tarmac up to SL6 Straight

-Cannondale Supersix EVO Straight (329€) Setback 15mm (359€) 

-BMC Teammachine up to 2020 Straight 

-BMC Teammachine 2021-2022 Straight (329€) Setback (359€)

-BMC Roadmachine Straight (319€) Setback 11.5mm (349€)

-BMC Roadmachine 2021-2022 Straight (319€) Setback (349€)

-BMC Two Stroke Straight (319€) Setback 11.5mm (349€)

-BMC Fourstroke (369€)

-Factor Ostro Straight (369€)

-Factor Ostro Setback (369€)

-Colnago C64-V3RS-V3-G3-X  Straight (319€) Setback 13mm (349€)

-Pinarello F8-F10-F12 Straight (369€)

-Cervélo R5 Straight

-Cervélo Caledonia 5 Straight

-Canyon Aeroad Straight from 2015 to 2020

-Giant Revolt Straight D-Fuse

-Giant TCX Straight D-Fuse

-Berria Belador Straight (319€) Setback 15 mm(349€)


-Next models for you, avilable soon!!


-Specialized Venge

-Specialized Allez Sprint

-Orbea OMX

-3T Strada

-3T Exploro

-Cervelo S models

-Scott Addict

-Bianchi Oltre

-Giant TCX

-Canyon Aeroad 2021

-Lightweight Urgestalt

-Pinarello Dogma F

-Need one different? Ask us!!


-Post: Unidirectional and bidirectional carbon fiber fabrics.

-Shaft and barrels: Anodized 7075 T6 Alu.

-Bolts: Ti Gr5 M5.

-Cradle:Unidirectional and bidirectional carbon fiber fabrics.

-Clamping system: 100% Dyneema® Loops in the straight seatposts

Weight : 95 grams in 350mm straight version.

Choose your seatpost length:

To choose the proper seatpost length, measure the length of your seatpost out of the frame. Measure from seatclamp (top of vertical tube) to saddle rails centre. Then choose the appropriate size in the following table. If there are two possibilities it is recommended to take into account the variation and use of the bicycle by different riders. If you need a larger or smaller size, please contact us to prepare a seatpost as up to 500 mm or even longer.


If you want a personalized seatpost length, only for you and your bike, the seatpots will be weightless. Weight reduction >5g.

Are you heavier than 90 kg?, contact us. We’ll make a personalized seatpost, adding less than 20g in 400 mm length.


Here at the end of this page you will can see a video with the assembling instructions of the loops. Even you can follow this link:



Do you want to buy a T1 Darimo Seatpost?  Contact us and we’ll contact you shortly.

*All brands and models of bicycles named may be the property of their respective owners. Darimo Carbon does not use these names as the name of his products, they are simply used to indicate the compatibility of the products.