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Seatposts

Modern bike seatposts are built from various materials, with alloy and carbon being the two most common. A quality alloy seatposts will boast a  lightweight profile, whilst also benefiting from being durable and cost efficient. A high-end carbon post is a necessary components for serious cyclists looking to squeeze every last bit of performance out of their machine. Competitive cyclists needing to precisely adjust their seatpost height on the fly should browse our range of dropper posts.
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  • D Shaped Silicone Seatpost Grommet
    £5.99
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  • Reverb Replacement Hose Barb (Remote)
    Now £6.00 Was £7.00 | Save £1.00
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  • Reverb Replacement Hose Barb (Post)
    Now £9.00 Was £10.00 | Save £1.00
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  • Plasma 2 Seatpost Spacer Support 2012
    £10.00
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  • Plasma 2 Seatpost Spacers Set
    £10.00
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  • TT3 Seatpost Spacer Support
    £15.00
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  • TT3 Seatpost Spacers Set
    £15.00
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  • Thudglove LT
    Now £15.99 Was £16.99 | Save £1.00
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  • Thudglove ST
    Now £15.99 Was £16.99 | Save £1.00
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  • Thudbuster LT Rebuild Kit - Parts Only
    Now £19.99 Was £21.99 | Save £2.00
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  • Thudbuster ST Rebuild Kit - Parts Only
    Now £19.99 Was £21.99 | Save £2.00
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  • Seatpost Spares For Posts Up To 2015
    From £20.00
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  • Scale RC Seatclamp System 2011
    £20.00
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  • M3.0 Seatpost, 27.2mm Diameter For Aspect (2016) And Scale (2018)
  • Syncros Dropper Seatpost Cable Barrel
    £20.00
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  • Kiez Pro Seatpost
    £20.00
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  • Revox LTD Alloy Seatpost
    £20.00
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  • Summerville N7 C1 31.6mm Seatpost
    £20.00
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  • SP-DC1 31.6x350mm Seatpost
    £20.00
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  • SP-DC1 30.9x350mm Seatpost
    £20.00
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  • Vitox 9.3 31.6mm Seatpost
    £20.00
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  • Single Bolt Seatpost Lower Clamp (Lower)
    £20.00
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  • Single Bolt Seatpost Upper Clamp (Upper)
    £20.00
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  • ReMote Clamp Conversion Kit
    Now From £21.00 Was £22.00 | Save £1.00
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  • Ergal Seat Clamp
    £21.99 RRP £23.95 | Save £1.96
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  • Di2 Battery Retention Plug
    £25.00
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  • Reverb Replacement Hose Kit (Barb Post Version)
    Now £25.00 Was £28.00 | Save £3.00
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  • Replacement Base For Syncros 2.0 Dropper Post
    £25.00
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  • Remote Light Action Replacement Lever
    Now £25.00 Was £26.00 | Save £1.00
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  • Plasma 2 Seatclamp System 2012
    £30.00
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  • Syncros 2.0 Dropper Seatpost Remote
    £30.00
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  • 31.6mm Inline Pivotal Seatpost For Voltage (2012) And Voltage FR 700 (2018)
  • 34.9mm Zero Offset Seatpost Set For Gambler (2008)
    £30.00
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  • Straitline Team Seatpost
    £30.00
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  • Contrail 6.0 31.6mm Seatpost
    £30.00
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  • SP-629 30.9mm/400mm Seatpost - Alloy/Grey
    £30.00
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  • Contrail 6.3 31.6mm Seatpost
    £30.00
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  • SP-503 27.2x350mm Suspension Seatpost
    £30.00
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  • SP-619 27.2x350mm E-Ville Seatpost
    £30.00
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  • SP-629 27.2x350mm Seatpost
    £30.00
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  • SP-629 31.6mm Seatpost
    £30.00
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  • Glide Suspension Seatpost 27.2x300mm
    £30.00
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  • SP-629 27.2x350mm Seatpost
    £30.00
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  • Kiez Dirt Pivotal Seatpost (2018)
    £30.00
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  • Satori SP-Trident 27.2mm Seatpost
    £30.00
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  • Satori SP-Trident 31.6mm Seatpost
    £30.00
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View 46

At Westbrook Cycles, we understand that the Seatpost of a bike is far from the most exciting part - but, like with many bike components it plays a vital role behind the scenes. As well as providing an important role within the comfort of your bike - the seatpost is also another kay component which can be upgraded in order to save weight. 

Most seatposts follow the same design principles, with a hollow tube constructed from aluminium or carbon fibre - onto the top of which the seat sits. Variations available in standard format includes seatpost diameter, seatpost length, as well as the aforementioned materials, and finally the clamp type. 

One of the most important considerations when buying your next seatpost, is the diameter of the seat post - and how this diameter works with your bike frame. The diameter must fit the internal diameter of your frame - which is typically 27.2mm on a standard frame, or either 30.9mm or 31.6mm on an oversized frame. 

Another consideration to make, is the length of the seatpost that you require. Although this is largely determined by your height - the longer the seatpost, the greater the comfort. Seatposts also need to have a minimum amount of the seatpost inside of the frame, to avoid cracking and snapping. To make this easier to understand, many bike frames have a minimum seatpost market on the side of the frame. 

Returning back to materials - aluminium and carbon fibre at the two most popular seatpost materials. Carbon fibre is the preferred option where budget permits - as well as being lighter than any other material, carbon fibre is also the best material for soaking up bumps and vibrations from the road. Specialist seatposts include suspension seatposts, layback seatposts, dropper seatposts and aero seatposts - which are covered in different categories across our site. 

You can view our full range of seatposts here, and as always - if you have any questions at all about the collection - please do just get in touch and we will be more than happy to answer any questions that you may have.

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