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Black Inc Round Seatpost

Power Meter City August 28, 2025

$300.00

Carbon fiber seatpost with one-bolt saddle clamp to make saddle adjustments easy

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Black Inc Round Seatpost

The Black Inc Round Seatpost is a lightweight road and gravel seatpost made entirely from carbon fiber. It weighs less than 200 grams and uses a unidirectional carbon weave to make it both strong and comfortable over rocky and technical roads. It features a matte and glossy black finish that matches the aesthetic of almost every bike. Additionally, this Black Inc seatpost uses clamps for 7×9 mm saddle rails and a one-bolt saddle clamp that makes it exceptionally easy to adjust your saddle tilt. This post is available in a 350 mm length and 0 mm or 25 mm setback options. It has a 27.2 mm diameter, making it compatible with a wide variety of road and gravel bikes.

 

Product Details

Key Features of the Black Inc Round Seatpost

  • Less Than 200 Grams: Made from carbon fiber, this post saves weight on your build.
  • One-Bolt Saddle Clamp: Makes installing and adjusting your saddle exceptionally easy.
  • For Road and Gravel Bikes: The 27.2 mm diameter makes it versatile and a great option for many road and gravel bikes.

Compatibility

This seatpost has a 27.2 mm diameter which makes it compatible with frames that accept 27.2 mm round seatposts. See Compatibility tab for more details.

Considerations

This seatpost is a great option for many riders, but is not compatible with bikes that use proprietary seatposts like many aero or race oriented road bikes.

Advice From Our Staff

We recommend this seatpost to riders looking for a lightweight seatpost. This seatpost also uses a great saddle clamp mechanism which makes installing, swapping and adjusting your saddle easy. This makes it perfect if you’re looking for weight savings or improved ease of use when it comes to adjusting your saddle.

Compatibility

  • Frame: Compatible with frames that use a 27.2 mm seatpost diameter.
  • Saddle: Works with saddles that have 7x9 mm rails.

Specs

  • Material: Carbon
  • Seatpost Diameter: 27.2 mm
  • Seatpost Length: 350 mm
  • Saddle Rail Clamp: 7x9 mm
  • Weight: 0 mm offset - 184 grams | 25 mm offset - 195 grams

In the Box

  • Black Inc Round Seatpost
  • 7x9 mm saddle rail clamps
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