Seat Tube/Post Size Measurement Gauge Size: 25-34.9mm

Seat Tube & Seatpost Size Measurement Gauge – 25–34.9mm

Take the guesswork out of identifying seat tube and seatpost sizes with this bicycle measurement gauge. Covering a listed size range of 25–34.9mm, it’s a practical tool to keep on hand when checking dimensions before choosing a replacement seatpost or planning a bike build.

Whether you’re working on your own bike or checking a frame in the workshop, start with a size check before selecting your parts.

• Purpose: Seat tube and seatpost size measurement.
• Listed size range: 25–34.9mm.
• Application: Bicycle sizing checks during maintenance, part replacement and assembly.

Please note: Confirm the required seatpost diameter against the frame manufacturer’s specifications before fitting. Seat tube outside diameter and seatpost diameter are different measurements and should not be used interchangeably.

We use a premium delivery service to ensure all of our bikes arrive in the best possible condition. Bicycles get shipped from a different warehouse and may arrive separately from any other items ordered. A signature is required to confirm proof of delivery.

All products are sourced from official importers and covered by manufacturers warranty. If you do need to send items back to us please make sure that you retain proof of postage in the event that it is needed.

Your product is covered by a 12 month Warranty or more if you opted for the extended warranty. Make sure you register your product.