Aluminum Bike Seat Post Shim 22.2mm To 25.4mm 60mm Length Reduction Sleeve For Mountain Road City Bikes Conversion Adapter Universal Fit Lightweight Durable Alloy Anti Rust

Single-Piece Aluminum Seat Post Shim 22.2-25.4mm, 60mm
✔️ Diameter 22.2-25.4 mm (0.87-1.00 in), length 60 mm (2.36 in)

This seat post shim is a lightweight, rust-resistant conversion sleeve that lets a bicycle seat post fit frames with larger inner diameters. It’s handy on mountain, road, city, MTB, and leisure bikes, delivering a secure, reliable connection without adding bulk. Note: the package does not include the seat post clamp, and is only suitable for bicycle seat posts with seat post clamps.

✅ Aluminum alloy construction is rust-proof and durable
✅ Fits seat posts 22.2-25.4 mm and is 60 mm long
✅ Tool-free installation using your existing seat post clamp
✅ Suitable for mountain, road, city, MTB, and leisure bikes

💡 What is a seat post shim used for on bikes and why would you need one?

A seat post shim helps adapter a post to frames with a different inner diameter for a snug, secure fit. It’s handy for upgrading compatibility across bike setups and preventing slippage. - Improves compatibility between post and frame inner diameter - Easy to install with the existing seat post clamp - Made from rust-resistant aluminum alloy for durability - Works across mountain, road, city and leisure bikes