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USE Seat Post Shim - 27.2 mm ID

£6.99 Please note this product has selling restrictions to your country. was
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SJS Cycles part number : 
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Questions & Answers (2) Q & A
The USE shim system allows you to fit a seat post into virtually any frame size. Our 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. All shims are designed with a "top lip" to stop the shim sliding into the frame.

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.

Shim design characteristics may affect weight.
Weights are accurate to the nearest gram.
Shims allow a rider to adjust the ID of a frame for a range of different sized posts.

OD 27.8mm - Aluminium
OD 28.0mm - Aluminium
OD 28.2mm - Aluminium
OD 28.4mm - Aluminium
OD 28.6mm - Aluminium
OD 28.8mm - Aluminium
OD 29.0mm - Aluminium
OD 29.2mm - Thermo-Plastic
OD 29.4mm - Thermo-Plastic
OD 29.6mm - Thermo-Plastic
OD 29.8mm - Thermo-Plastic
OD 30.0mm - Thermo-Plastic
OD 30.2mm - Thermo-Plastic
OD 30.4mm - Thermo-Plastic
OD 30.6mm - Thermo-Plastic
OD 30.8mm - Thermo-Plastic
OD 31.0mm - Thermo-Plastic
OD 31.2mm - Thermo-Plastic
OD 31.4mm - Thermo-Plastic
OD 31.6mm - Aluminium
OD 31.8mm - Thermo-Plastic
OD 32.0mm - Thermo-Plastic
OD 32.2mm - Thermo-Plastic
OD 32.4mm - Thermo-Plastic
OD 32.6mm - Thermo-Plastic
OD 32.8mm - Thermo-Plastic
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Questions & Answers (2)
Why Is The 31.6 Option In Aluminium , When There Is Thinner And Fatter Sizes In Plastic
27 Dec 2016

Unfortunately this is just how USE supply them. I'm sure at some point there was a valid reason for it, but unfortunately we don't know what the reason is and they have been supplied like this for a great number of years.

Use Seat Post Shim - 27.2 Mm Id
21 May 2014
i want to buy a USE Seat Post Shim 27.2 mm ID to 28 mm OD,i live in Taiwan,can you sipp it for me?how much i need pay totally?by bank transfer or credit card ?
best regards

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