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Seatpost Shim shop the largest and most affordable!

Shopping for a seatpost shim online?
Hollandbikeshop.com has the seatpost shim you’re looking for.
Seatpost shims fills up the space between the inside diameter of the frame and the seatpost's outside diameter.
In our wide range of bicycle saddles and seatposts at Hollandbikeshop.com, you’ll find all shims you might need to fix or improve the fit of your seatpost. 
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Seatpost Shim
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Contec Seatpost Shim Supersizer Ø31.6 -> 34.9mm - Black

Contec Seatpost Shim Supersizer Ø31.6 -> 34.9mm - Black

CONTEC Shim "Supersizer" Base-ø 31.6mm, aluminium, anodized black, 31,6x34,9x80mm Extension to ø 34,9mm Originalnumber SLEEVE31.6BK Design:shim Seat tube diameter:34,9 mm Reducing to ...

£ 7.95
In Stock
EAN 4251507941174
Seatpost Shim 27.2-31.6 Alu

Seatpost Shim 27.2-31.6 Alu

Seatpost Shim Suitable for: Frame tube inner diameter 31.6 mm to a seatpost with a diameter of 27.2 mm Specifications: Color: Silver Material: Aluminum Inside diameter: 27.2 mm Outside diamete ...

£ 4.06
In Stock
EAN 8716637001724
Seatpost Shim 27.2-30.4 Alu

Seatpost Shim 27.2-30.4 Alu

Seatpost Shim Suitable for: Frame tube inner diameter 30.4 mm to a seatpost with a diameter of 27.2 mm Specifications: Color: Silver Material: Aluminum Inside diameter: 27.2 mm Outside diamete ...

£ 4.06
In Stock
EAN 8716637001670
Seatpost Shim 27.2-29.8 Alu

Seatpost Shim 27.2-29.8 Alu

Seatpost Shim Suitable for: Frame tube inner diameter 29.8 mm to a seatpost with a diameter of 27.2 mm Specifications: Color: Silver Material: Aluminum Inside diameter: 27.2 mm Outside diamete ...

£ 4.19
In Stock
EAN 8716637001649
Seatpost Shim 27.2-30.2 Alu

Seatpost Shim 27.2-30.2 Alu

Seatpost Shim Suitable for: Frame tube inner diameter 30.2 mm to a seatpost with a diameter of 27.2 mm Specifications: Color: Silver Material: Aluminum Inside diameter: 27.2 mm Outside diamete ...

£ 4.06
In Stock
EAN 8716637001663
Seatpost Shim 25.4-27.2 Alu

Seatpost Shim 25.4-27.2 Alu

Seatpost Shim Suitable for: Frame tube inner diameter 27.2 mm to a seatpost with a diameter of 25.4 mm Specifications: Color: Silver Material: Aluminum Inside diameter: 25.4 mm Outside diamete ...

£ 4.06
In Stock
EAN 8716637001540
Seatpost Shim 27.2-30.0 Alu

Seatpost Shim 27.2-30.0 Alu

Seatpost Shim Suitable for: Frame tube inner diameter 30.0 mm to a seatpost with a diameter of 27.2 mm Specifications: Color: Silver Material: Aluminum Inside diameter: 27.2 mm Outside diamete ...

£ 4.19
In Stock
EAN 8716637001656
Seatpost Shim 0.5mm Steel (1)

Seatpost Shim 0.5mm Steel (1)

HBS Seatpost Shim Color: Silver Material: Steel Thickness: 0.5 mm Length: 34 mm Weight per piece: 22 grams

£ 3.36£ 2.50
In Stock
EAN 8717289105112
Seatpost Shim 27.2-30.8 Alu

Seatpost Shim 27.2-30.8 Alu

Seatpost Shim Suitable for: Frame tube inner diameter 30.8 mm to a seatpost with a diameter of 27.2 mm Specifications: Color: Silver Material: Aluminum Inside diameter: 27.2 mm Outside diamete ...

£ 4.06
In Stock
EAN 8716637001687
HBS Seatpost Shim Ø27.2 -> 30.9mm - Black

HBS Seatpost Shim Ø27.2 -> 30.9mm - Black

Brand: HBS Type: Seatpost Shim Size: 27.2 - 30.9 mm Material: Aluminum Color: Black

£ 7.62
In Stock
EAN 8715957577810
Seatpost Shim 25.4-26.8 Alu

Seatpost Shim 25.4-26.8 Alu

Seatpost Shim Suitable for: Frame tube inner diameter 26.8 mm to a seatpost with a diameter of 25.4 mm Specifications: Color: Silver Material: Aluminum Inside diameter: 25.4 mm Outside diamete ...

£ 4.06
In Stock
EAN 8716637001526
By.Schulz G.Shimano Shim Ø31.6 -> 33.9mm Aluminum - Black

By.Schulz G.Shimano Shim Ø31.6 -> 33.9mm Aluminum - Black

BY.SCHULZ Shim "G.Shim" for adapting special frame seat tube diameters to the outer dimensions of the seat post, high quality anodized aluminium shim, double slotted, 120mm basis Ø 31,6mm ...

£ 20.27
In Stock
EAN 4251239313294
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HBS Seatpost Shim 0.5mm PVC - Black

HBS Seatpost Shim 0.5mm PVC - Black

HBS Seatpost Shim Color: Black Material: PVC Inside diameter: 25 mm Outside diameter: 26 mm Thickness: 0.5 mm Length: 34 mm Weight: 4 grams

£ 1.83
In Stock
EAN 8716812512649
Seatpost Shim PVC 1mm

Seatpost Shim PVC 1mm

HBS Seatpost Shim - Color: Black - Material: PVC - Inside Diameter: 25 mm - Outside Diameter: 27 mm - Thickness: 1 mm - Length: 34 mm - Weight: 4 grams

£ 1.83
In Stock
EAN 8716812512656
Seatpost Shim 27.2-31.8 Alu

Seatpost Shim 27.2-31.8 Alu

Seatpost Shim Suitable for: Frame tube inner diameter 31.8 mm to a seatpost with a diameter of 27.2 mm Specifications: Color: Silver Material: Aluminum Inside diameter: 27.2 mm Outside diamete ...

£ 4.19
In Stock
EAN 8716637001717
Seatpost Shim 27.2-29.2 Alu

Seatpost Shim 27.2-29.2 Alu

Seatpost Shim Suitable for: Frame tube inner diameter 29.2 mm to a seatpost with a diameter of 27.2 mm Specifications: Color: Silver Material: Aluminum Inside diameter: 27.2 mm Outside diamete ...

£ 4.19
In Stock
EAN 8716637001618
Kalloy Seatpost Shim Ø27.2 -> 28.6mm - Silver

Kalloy Seatpost Shim Ø27.2 -> 28.6mm - Silver

Kalloy Seatpost Shim Brand: Kalloy Type: Seatpost Shim Seat tube diameter: 28.6 mm Reduced to: 27.2 mm Thickness: 0.7 mm Material: Aluminum Weight: 42 g Color: Silver Supplier item number: BH-001

£ 6.61
In Stock
EAN 4016538638109
HBS Seatpost Shim Ø25.4 -> 22,2 Aluminum - Silver

HBS Seatpost Shim Ø25.4 -> 22,2 Aluminum - Silver

HBS Seatpost Shim Diameter: 25.4 -> 22.2 Material: Aluminum Color: Silver

£ 3.36£ 1.65
In Stock
Ergotec Seatpost Shim Ø27.2 -> 31.6mm - Silver

Ergotec Seatpost Shim Ø27.2 -> 31.6mm - Silver

ERGOTEC filling shim Basic Ø 27.2 mm, length 80 mm widening to Ø 31.6 mm Seat tube diameter: 31.6 mm Reduce to: 27.2 mm Thickness: 2,200 mm Material: alu Color: silver Supp ...

£ 3.81
In Stock
EAN 4016538037544
XLC Seatpost Shim Ø27.2->28.0mm 80mm - Silver

XLC Seatpost Shim Ø27.2->28.0mm 80mm - Silver

XLC seatpost shim with a length of 80mm. - For seatposts with a diameter of 27.2 to 28.0 mm Specifications: Brand: XLC Product: Seatpost shim Length: 80mm Diameter: Ø27.2->28.0mm Color: Silver

£ 7.41
In Stock
EAN 4055149475284
XLC Shim Ø27.2 -> 31.8mm 80mm Aluminum - Silver

XLC Shim Ø27.2 -> 31.8mm 80mm Aluminum - Silver

XLC Shim Ø27.2 -> 31.8mm 80mm. - Aluminium Specifications: Brand: XLC Product: Shim Material: Aluminium Length: 80 mm Diameter: Ø27.2 -> 31.8mm Color: Silver

£ 7.41
In Stock
EAN 4055149475383
Seatpost Shim 1.0 Mm Steel

Seatpost Shim 1.0 Mm Steel

HBS Seatpost Shim Specifications: Material: Steel Color: Silver Length: 35 mm Inside Diameter: 22.2 mm Outside Diameter 25.4 mm Thickness: 1 mm

£ 2.52£ 2.12
In Stock
EAN 8717289105129
Seatpost Shim 25.4-26.6 Alu

Seatpost Shim 25.4-26.6 Alu

Seatpost Shim Suitable for: Frame tube inner diameter 26.6 mm to a seatpost with a diameter of 25.4 mm Specifications: Color: Silver Material: Aluminum Inside diameter: 25.4 mm Outside diamete ...

£ 4.06
In Stock
EAN 8716637001519
XLC Shim Ø30.9 -> 31.6mm 80mm - Silver

XLC Shim Ø30.9 -> 31.6mm 80mm - Silver

XLC Shim 30.9 -> 31.6mm 80mm. - 80mm Long Specifications: Brand: XLC Product: Shim Diameter: Ø30.9 -> 31.6mm Length: 80 mm Color: Silver

£ 10.12
In Stock
EAN 4055149475390
  • Fast delivery
  • International delivery
  • 8.9/10 customer reviews
  • 2-year warranty
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By.Schulz G.Shimano Seatpost Shim 30.9 -> 33.9mm - Black

By.Schulz G.Shimano Seatpost Shim 30.9 -> 33.9mm - Black

By.Schulz G.Shim Seatpost Shim High-quality filling bush for adjusting the diameter of the saddle tube for the outer diameter of a seatpost. With 2 slots Base diameter 30.9 mm, widened at a diam ...

£ 20.27
In Stock
EAN 4251239313300
Seatpost Shim PVC 1.5mm

Seatpost Shim PVC 1.5mm

HBS Seatpost Shim - Color: Black - Material: PVC - Inside Diameter: 25 mm - Outside Diameter: 28 mm - Thickness: 1.5 mm - Length: 34 mm - Weight: 4 grams

£ 1.83
In Stock
Seatpost Shim 27.2-29.6 Alu

Seatpost Shim 27.2-29.6 Alu

Seatpost Shim Suitable for: Frame tube inner diameter 29.6 mm to a seatpost with a diameter of 27.2 mm Specifications: Color: Silver Material: Aluminum Inside diameter: 27.2 mm Outside diamete ...

£ 4.06
In Stock
EAN 8716637001632
XLC Shim Ø25.4 -> 27.2mm 80mm Aluminum - Silver

XLC Shim Ø25.4 -> 27.2mm 80mm Aluminum - Silver

XLC Shim Ø25.4 -> 27.2mm 80mm. - Aluminium Specifications: Brand: XLC Product: Shim Material: Aluminium Length: 80 mm Diameter: 25.4 -> 27.2mm Color: Silver

£ 7.41
In Stock
EAN 4055149475260
Ergotec Seatpost Shim Ø27.2 -> 30.4mm 80mm - Silver

Ergotec Seatpost Shim Ø27.2 -> 30.4mm 80mm - Silver

Brand: Ergotec Type: Seatpost shim Size: 27.2 - 30.4/80 mm Material: Aluminum Color: Silver

£ 7.58
In Stock
EAN 4016538093380
Ergotec Seatpost Shim Ø25.4 -> 28.6mm 80mm - Silver

Ergotec Seatpost Shim Ø25.4 -> 28.6mm 80mm - Silver

Brand: Ergotec Type: Seatpost shim Size: 25.4 - 28.6 / 80 mm Material: Aluminum Color: Silver

£ 7.92
In Stock
EAN 4016538096275

Seatpost shim


The seatpost is inextricably linked to the saddle and your cycling comfort, but sometimes finding the right seatpost size can be difficult.
Fortunately, you can quickly find the right fit for your frame with the help of seatpost shims.
If you're planning on building your own bicycle out of individual parts, and you've just found out that the seatpost diameter is too small for your frame, there's no need to buy yourself a replacement seatpost.
Try shims!
These small but convenient parts can help you fit your seatpost perfectly inside the frame’s appropriate tube. Seatpost shims are generally made of solid aluminum. 
 

All seatpost shim brands online


Hollandbikeshop.com is a dealer in seatpost shims.
We often have bicycle seatpost shims on sale or in our outlet by top brands like Ergotec, Kalloy, Airwings and TranzX.
Hollandbikeshop.com is the number 1 bike shop for all your bicycle saddles and seatposts.
We have the widest range of bicycle parts (over 100,000) available from stock.
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  • Fast delivery
  • International delivery
  • 8.9/10 customer reviews
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  • Webshop Trustmark
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