Product Details
FUNN Seat Post Shim 30.9mm to 31.6mm
The FUNN Seat Post Shim allows you to fit a 30.9mm seatpost into a 31.6mm frame, making it easy to adapt different seatpost and frame sizes. It’s a simple and practical solution when upgrading components or reusing an existing seatpost on another bike.
Precision-made for a snug and secure fit, the shim ensures the seatpost sits correctly inside the frame while maintaining proper alignment and stability. Its lightweight yet durable construction provides dependable support without adding unnecessary weight.
Ideal for riders looking for a clean and reliable way to match seatpost and frame sizes.
Key Features:
- Converts 30.9mm seatpost to fit 31.6mm frame
- Ensures secure and precise seatpost fit
- Lightweight and durable construction
- Simple installation for quick setup
- Ideal for adapting seatpost and frame compatibility
What Sets Alchemy Apart
The best pre-owned bikes
When you buy a pre-owned bike from Alchemy Cycle Trader, you’re getting more than just a great deal. Every bike is roadworthy certified, comes with a 3-month warranty, and includes your first service free - so you can ride away with complete confidence.
Buy with confidence
In-house Active Thermography Carbon Fibre Testing for extra peace of mind on pre-owned bikes.
Learn more about our carbon testing.
Expert Servicing & Ongoing Support
Our professional workshop team is here to keep your bike running at its best long after you’ve taken it home. From routine servicing to performance tuning, our qualified mechanics ensure your ride stays smooth, safe, and ready for every adventure. Whether it’s your first free service or future maintenance, you can count on Alchemy Cycle Trader for trusted support and expert care. Learn more about our workshop services.
