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GANNA

GANNA AERO FIN Carbon Seatpost | from 99g, Biomimetic Aero Design

Regular price $369.00 SGD

Regular price Sale price $369.00 SGD

Sale Sold out

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Length 300mmVariant sold out or unavailable 370mmVariant sold out or unavailable

Model 27.2mmVariant sold out or unavailable Cervelo S5Variant sold out or unavailable Cervelo SoloistVariant sold out or unavailable Specialized SL7/AllezVariant sold out or unavailable Specialized SL8Variant sold out or unavailable Merida ReactoVariant sold out or unavailable Merida Reacto 26Variant sold out or unavailable Pinarello Dogma FVariant sold out or unavailable Factor OneVariant sold out or unavailable Factor Ostro VAM 2.0Variant sold out or unavailable Colnago V4RsVariant sold out or unavailable Colnago Y1RsVariant sold out or unavailable Canyon 23-24 Aeroad CFR/SLXVariant sold out or unavailable Canyon 25-26 Aeroad CFR/SLXVariant sold out or unavailable Cannondale Supersix Evo4/Evo5Variant sold out or unavailable Trek Madone SL/SLRVariant sold out or unavailable Scott FoilVariant sold out or unavailable XDS X-Lab AD8/AD9Variant sold out or unavailable Seka SpearVariant sold out or unavailable Quick ER:ONEVariant sold out or unavailable

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Currently shipping to Singapore Addresses Only.

From 99g (300mm)/115g (370mm) | 13mm ultra-slim aero profile

Full-carbon saddle clamp | Titanium bolts included | Max load 110kg

Compatible with 20+ models: Cervélo S5 / Soloist, Specialized SL7/SL8, Merida Reacto, Pinarello Dogma F, Factor, Colnago, Canyon, Trek, Scott, and more

Features

13mm Biomimetic Aero Profile

The 13mm frontal profile is drawn from the cross-section of a shark's dorsal fin. Following Mother Nature's design, it is a shape that cleaves airflow cleanly at the leading edge and guides it to reduce turbulent drag at the rear.

GANNA's design positions this as a meaningful aero gain over conventional round or D-section posts, particularly in crosswind conditions where vortex drag is highest.

This biomimetic design is completed with the GANNA Angle° /Angle° Pro Integrated Handlebars.

Full-Carbon Saddle Clamp

The saddle rail clamp is full carbon, an industry-first according to GANNA.

Beyond the weight saving, the carbon construction enables better load transfer from saddle rails into the post body, and the material's natural damping characteristics contribute to the post's compliance behaviour.

Saddle clamp width is 47mm, compatible with standard round and oval rail saddles.

Bionic Micro-Offset Flex Geometry

A bionic micro-offset shape is built into the post's profile, allowing controlled longitudinal flex.

Precision Laser-Fused Finish

The AERO FIN ships with an exposed naked carbon finish produced via a laser-fused surface process. The weave is the surface, not painted nor decal-ed. Natural weave variation between units is a characteristic of the material, not a manufacturing defect.

Specifications

Material	Carbon fibre (full construction, including saddle clamp)
Frontal Profile	13mm
Available Lengths	300mm / 370mm
Weight (300mm)	from 99g
Weight (370mm)	from 115g
Saddle Clamp Width	47mm
Min Insert (300mm)	75mm
Max Insert (300mm)	160mm
Min Insert (370mm)	95mm
Max Insert (370mm)	230mm
Max Rider Load	110kg
Finish	Naked carbon fibre, laser-fused surface
Max Saddle Clamp Torque	Front 3Nm / Rear 5Nm
Max Seatpost Clamp Torque	5Nm (do not exceed 5.5Nm)

Compatibility

The AERO FIN is offered in model-specific variants, each matched to the frame's seat tube interface, offset geometry, and clamp requirements. Select your bike model when ordering.

List updated as of May 2026.
Cervélo: S5 / Soloist
Specialized: SL7 / Allez / SL8
Merida: Reacto / Reacto 26
Pinarello: Dogma F
Factor: One / Ostro VAM 2.0
Colnago: V4RS / Y1RS
Canyon: Aeroad CFR/SLX 2023–2024 / Aeroad CFR/SLX 2025–2026
Cannondale: EVO4 / EVO5
Trek: Madone SL/SLR
Scott: Foil
XDS: X-Lab AD8 / AD9
Seka: Spear
Quick: ER One
Universal: 27.2mm round

Installation Notes

Apply carbon grip paste to the inserted section of the seatpost before installation. All bolt interfaces must be coated with anti-seize assembly grease. Ensure full contact between the saddle clamp and seat rails before torquing. For 27.2mm round seatposts, orient the clamp opening forward.

What's Included?

1x GANNA AERO FIN Carbon Seatpost
2x Full-carbon saddle rail clamp
2x Titanium bolts
3x Titanium hardware Parts

Links

For the matching integrated handlebar, see the GANNA Angle° / GANNA Angle° Pro

To browse all GANNA products, click here.

To browse all seatposts, click here.

Warranty

GANNA provides a 2-year warranty against non-human damage. Warranty is automatically extended upon member registration and serial number activation after delivery.

If you are a weight weenie and cut the seatpost shorter, you are still covered by warranty! However, you will not be eligible for a refund/exchange.

Seatpost with used marks will not be eligible for refund/exchange.

To claim, submit the damaged part and proof of purchase within the warranty period. Warranty is void for products sourced through unauthorised channels, missing proof of purchase, mechanical destruction, accidental drops, or improper installation.

Product finish: Naked carbon fibre with natural weave variations. These variations are a material characteristic, not a defect.