Must Have 100mm Aluminum Seatpost Shim Reducer Sleeve For Mountain Bikes CNC Machined 6061 Alloy Lightweight Anti Rust Seat Post Adapter Diameter From 25.4 27.2 28.6 30.0 30.4 30.9 31.6 31.8 34.9mm Easy Install

100mm Aluminum Seatpost Shim Reducer Sleeve (Single Pack)
✔️ 100mm length, CNC machined 6061 alloy, fits 25.4-34.9mm

This 100mm seatpost shim reducer sleeve is a lightweight, rust-resistant adapter made from 6061 aluminum. It's typically used on mountain bikes and road bikes to adapt seatposts to frames with different inner diameters, ensuring a secure fit and clean look.

✅ Length: 100mm
✅ Material: 6061 aluminum alloy, CNC machined surface
✅ Finish: black, anti-rust, lightweight
✅ Diameters supported: 25.4, 27.2, 28.6, 30.0, 30.4, 30.9, 31.6, 31.8, 34.9 mm
✅ Easy install and removal

💡 What is a seatpost shim reducer sleeve used for and how does it fit different frame diameters?

A handy, practical answer for riders dealing with frame-post diameter mismatch. - It allows seamless adaptation between mismatched seatpost and frame diameters - Made from 6061 aluminum for light weight and rust resistance - CNC machined finish provides a precise, smooth insertion