Darimo T1 Carbon Seatpost for Colnago Y1RS

The Darimo T1 Aero Carbon Seatpost is the ultimate lightweight upgrade for the Colnago Y1RS. Designed as a non-round seatpost solution, it significantly reduces weight in a critical area of the bike — the seatpost and saddle — helping to minimize the pendulum effect and enhancing bike handling and responsiveness.

Hand-laminated using unidirectional and bidirectional carbon fiber fabrics, each post is optimized through finite element analysis and destructive testing to ensure the perfect balance of minimal weight and maximum resistance.

The straight version features a Dyneema® loop clamping system, reducing head weight dramatically while being compatible with all rail types, including 7x9mm carbon rails.

Rider Weight Limit: Although tested under ISO 4210-2 standards, the T1 is recommended for riders under 90kg.

FEATURES

World-class lightweight: just 95g for the 350mm straight version.

Custom-fit: designed specifically for Colnago Y1RS.

Hand-laminated carbon: UD & bidirectional layup for strength and safety.

Innovative Dyneema® clamp: ultra-light, compatible with all rail types.

Premium hardware: 7075 T6 alloy parts, Ti Gr5 M5 bolts.

Tested to the limit: validated via FEA and destructive testing.

SPECIFICATIONS

Post: UD & bidirectional carbon fiber

Shaft & barrels: anodized 7075 T6 alloy

Bolts: Ti Gr5 M5 titanium

Cradle: carbon fiber

Clamp system: Dyneema® loops (straight versions)

Weight: ~95g (350mm straight)

Rider weight limit: 90kg

Certification: ISO 4210-2 compliant

Bike compatibility: Colnago Y1RS

SEATPOST LENGTH SELECTION

Measure the seatpost extension out of the frame (from the top of the seat clamp to saddle rail center):

250mm: 100 mm (minimum extension), 175 mm (maximum extension)

300mm: 145 mm (minimum extension), 220 mm (maximum extension)

350mm: 190 mm (minimum extension), 265 mm (maximum extension)

400mm: 235 mm (minimum extension), 310 mm (maximum extension)