zoom USE SX Seat Post Shim
USE SX Seat Post Shim
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The USE shim system allows you to fit a seat post into virtually any frame size. Their shims are made to 100mm length and are longer than other shims on the market giving your seat post much better support inside the frame.
Top Features of the USE SX Seat Post Shim
- Most of the sizes are made from a resin material for performance reasons (Thermoplastic (UPVC)). Some (smaller sizes), will be aluminum
- All these shims have internal diameter 27.2mm
Shims are available in Aluminum and Thermo Plastic, despite the latter being a lighter solution its material characteristics limit the thickness of the ID - OD measurements. Aluminum is used to achieve the thinnest shims as it is a more robust material.
Rolled Aluminum shim - the very thinnest shims are rolled from sheet metal. 25.4mm shims need to be so thin as they are etched down in acid to the correct tolerance and are too thin to anodise (show as silver).
Machined Aluminum shim - machined to very high tolerances from 6082 T6 Aluminum and then black anodised to protect from corrosion.
Machined Plastic shim - larger size shims are machined to very high tolerances from "filled" engineering thermoplastic UPVC. This keeps the weight down, as the shims get thicker.
About Seat Posts
A good quality seat post will save weight and hold your saddle securely. Seatposts are made in various materials, alloy and carbon being the two most common, alloy posts are lightweight, durable and cost efficient, while carbon posts are the popular choice for top end machines. Seat posts vary in where they hold the saddle relative to their own centre line so make sure you have enough adjustment on your saddle rails to allow for this or you could end up with your saddle too far forwards. A seat post needs to fit your frame exactly and are measured by as little as 0.2mm. When choosing a new one, either read off the measurement from your old seat post or measure it carefully with a vernier calliper. Make sure you lubricate the frame (unless they're carbon fibre) before insertion or you'll struggle to get it out again.
About the USE brand
USE have got an unhealthy devotion to perfecting the ride experience because , well because riding is what they're about & they figure that if they develop new gear they get to test it, which means more riding & frankly that's the sweet spot.
The delivery options available for shipping this product along with the contents of your basket to USA are:
- Standard Delivery: Estimated Delivery within 8 working days – $15.01
Spend $80.03 more to qualify for free delivery
- Priority International Delivery: Estimated delivery within 6 working days - $21.63
- Tracked Courier Delivery: Estimated delivery within 4 working days - $34.99
Wiggle ships to over 100 countries. To see what delivery options are available for other destinations you can update your delivery destination via the International Options feature at the top right of the website.
Goods are shipped from the UK. Does not include delivery charges, local taxes or import duties, if applicable.
More information on International delivery options
We will happily refund or exchange any item purchased on Wiggle if returned to us within 365 days, excluding Wiggle gift vouchers and personalized products except when faulty.
Returned goods must be unused and supplied with their original packaging, unless the goods are faulty.
Wiggle will pay the return postage costs for any faulty items.
More information on Wiggle's return policy
Product Q & A
Ask your questions and share your answers.
29.2 and bigger is thermoplastic... so the 30.0 is thermoplastic.
I want to replace seat post with a suspention type - with a 27.2mm dia. What shim dimensions do i purchase to suit new one?
According to the description, "all these shims have internal diameter 27.2mm", which fits your seat post, so you just need the one that fits your seat tube.... so the 31.6 one.
I want my 30.9mm seatpost to fit in my frame that usually takes a 31.6mm post.
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