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LIGHTWEIGHT Seatpost Adapter

If you own a frameset and you want to use a smaller diameter seatpost this is exactly what you need.

 

  1. Shim transforms a 30.9mm ID seatube to use a more common 27.2mm seatpost.
  2. Shim transforms a 32.4mm ID seatube to use a more common 27.2mm seatpost.

 

  • One piece CNC machined from Aluminum alloy
  • Anodized finish to prevent corrosion

 

30.9-27.2mm; Black

  • Length: 90mm
  • Weight: 36g

32.4-27.2mm: Silver

  • Length: 95mm
  • Weight: 68g

Lightweight Seat Post Shim Adapter

$12.95Price
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    OMNI Racer Worlds Lightest cycling components

     

    OMNI Racer is small young U.S. company with a passion for cycling and dedicated to bringing cyclists innovative, lightweight, and high quality cycling components to riders that seek the lightest and best quality products.​OMNI Racer's products are engineered to optimize the best structural properties of carbon fiber, ceramics & high strength alloys, creating components at extremely low weights.​* While most of the OMNI Racer products are amongst the worlds lightest there may be other lighter products available.

    WORLD'S LIGHTEST*

     info@omniracer.com
    Needville Texas USA

    © Copyright 2026 by OMNI Racer

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