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Seat
Clamps

Giant

TCR Alloy ISP Clamp With Carbon Cap - Regular (2025)

£140.00

Giant

Seatpost Clamp With Spacers For TCR Advanced SL (2021 Onward)

£139.99

Giant

ISP Clamp For 2023 Propel Advanced SL

£139.99

Giant

9 ISP Seatpost Clamp With Spacer

£119.99

Giant

TCR ISP Seat Clamp (2025)

£110.00

Giant

Propel Advanced SL ISP Clamp (2022)

£109.99

Giant

Seatpost Clamp For TCR Advanced SL (2021 Onward)

£104.99

Giant

ISP Clamp For 2021 TCR

£99.99

Giant

9 ISP Seatpost Clamp With Spacer (25mm Longer)

£94.99

Giant

Seatpost Clamp For Propel Advanced SL

£89.99

Orbea

Digit 31.6mm Seatpost And Clamp (2016)

£88.00

Cannondale

Superslice Seatpost Binder

£84.99

Colnago

V3RS/V3 Integrated Seat Clamp

£66.95

Giant

ISP Seat Clamp With Ti Bolt For 2016 TCR Advanced SL

£64.99

Scott

Foil Seatclamp 2016 Onwards

£60.00

Most

Pinarello Dogma F Twin Force Seat Clamp Kit

£55.00

CUBE

Seatpost Wedge For Litening

£54.99

Chris King

Seatpost Collar

From  £50.00
Available Colours
Available Sizes

Orbea

Orca Seatpost Clamp (2014)

£49.00

Wolf Tooth Components

Mark Zero Seatpost Clamp - 29.8mm

£45.00

Wolf Tooth Components

Mark Zero Seatpost Clamp - 31.8mm

£45.00

Wolf Tooth Components

Mark Zero Seatpost Clamp - 34.9mm

£45.00

Orbea

Seatpost Clamp For Ordu (2013)

£44.00

CUBE

Integrated Seatpost Clamp 3367

£41.95

Cannondale

Internal Seatpost Wedge For SuperX 2017/Synapse Carbon 2018

£40.99  
Was  £44.99   | Save  £4.00   (9%)

Giant

TCR Alloy ISP Clamp - Long (2025)

£40.00

Scott

Addict RC Seatclamp (2025)

£40.00

CUBE

Left Dropout Adapter 20-03040

£40.00

Thomson

Seatpost Collar

£40.00  
Was  £45.00   | Save  £5.00   (11%)
Available Colours
Available Sizes

Cannondale

Topstone Neo Carbon Internal Seat Binder

£39.99

Giant

ISP Clamp For 2023 Propel Advanced SL - Long Version

£39.99

Colnago

C64 Seat Seatpost Clamp Fitting

£36.95

Orbea

Orca Seatpost Clamp (2015)

£36.00

Cannondale

KNOT System Six Aero Seat Binder

£35.99  
Was  £39.99   | Save  £4.00   (10%)

Wolf Tooth Components

Quick Release Seatpost Clamp

From  £35.00  
Was  £38.00   | Save  £3.00   (8%)

Box Components

One Quick Release Seat Clamp

£34.99
Available Colours
Available Sizes

Orbea

Saddle Clamp For 27.2mm SB20 Carbon Seatpost

£31.00

Orbea

Seatpost Wedge For Gain Carbon (2021)

£31.00

Orbea

34.7mm Seatpost Clamp For Oiz Carbon - Titanium Bolt

£31.00

Bergamont

Prime RS Seatpost Clamp (2017)

£30.00

Scott

MTB 34.9mm Seatclamp (2025)

£30.00

Scott

Replacement Seatclamp For Addict RC (2020)

£29.99

Cannondale

28.0mm Seatpost Clamp For CAAD 12/S6 Evo 2 2016/Synapse Alloy 2018

£29.99  
Was  £32.99   | Save  £3.00   (9%)

Giant

Integrated Seat Clamp With 0.5mm Washer For 30.9mm Dropper And D-Fuse

£29.99

Most

Seat Clamp Twin Force Kit

£28.00

Orbea

Integrated Seatpost Clamp For Orca OMR (2017)

£27.00

Orbea

Digit Quick Release Seatpost Clamp - 31.8mm (2016)

£27.00

Hope Technology

Quick Release Seat Clamp

£27.00  
Was  £29.00   | Save  £2.00   (7%)
Available Colours
Available Sizes

Orbea

34.7mm Seatpost Clamp For Oiz Carbon - Steel Bolt

£27.00

Orbea

Aero Seatpost Clamp

£27.00

Cannondale

S6 EVO Internal Seat Binder V2

£26.99  
Was  £29.99   | Save  £3.00   (10%)

KS Suspension

Ether KSSQ Quick Release Seat Clamp

£26.99
Available Sizes

Scott

34.9mm Seatclamp For Spark (2022)

£26.00

Wolf Tooth Components

Seatpost Clamp

£25.00  
Was  £29.00   | Save  £4.00   (14%)
Available Colours
Available Sizes

Surly

Stainless Steel Seatpost Clamp

£24.99  
Was  £26.99   | Save  £2.00   (7%)
Available Colours
Available Sizes

Cannondale

CAAD13 Internal Seat Binder

£24.99

Giant

Integrated Seatpost Clamp Kit For 2014-2019 TCX Advanced

£24.99

Giant

G8SC03 Integrated Seatpost Clamp For 2018 FastTour And AllTour

£24.99

CUBE

Seatpost Clamp For Agree, Nuroad And Nulane C:62

£24.95

Cannondale

Seatpost Wedge Assembly For Slice Aero 2015

£23.99  
Was  £25.99   | Save  £2.00   (8%)

Seat post clamps provide that neat finishing touch to your frame, they are often available in anodised colours to match the rest of your bike. We list a range of clamps with both quick release for quick and simple saddle height adjustment, as well as traditional allen key versions, ideal for the times when security is a priority.

Even in an office full of diehard cyclists, it’s often difficult to get people excited when talking about Seatpost Clamps - these clamps, however, are some of the most important components of any bike. Seatpost Clamps are small, but mighty components, without which would render a bike completely unrideable. These clamps are a circular metal ring/collar which sits at the top of the seat tube, gripping the tube and holding the seat-post in place, ensuring that the saddle/seat does not spin round, whilst ensuring the seat-post does not retreat into the frame of the bike

Although bikes do come with a seat-post clamp as standard, there may be a few reasons to buy one - many customers buy these clamps to improve how their bike looks, or are buying a new clamp to replace an older, damaged clamp. Common damage on seat-post clamps includes stripped threads, providing an un-secure fit. 

Materials and designs of seat-post clamps remain the same, across all kinds of different bikes - including BMXs, Mountain Bikes, as well as Road Bikes. Although there are a few considerations to consider. One of the most important factors with any Seatpost Clamp is the internal diameter of the clamp - which for obvious reasons must match up. To make things a little easier, there are five different seat diameters available on the market, which are as follows: 

  • 28.6mm
  • 30.0mm
  • 31.8mm
  • 34.9mm
  • 36.4mm 

A lot of Seat Clamps sold also feature a quick release closure, which uses a small yet strong lever to close the collar on the seat clamp - which means you can open and close the clamp quickly and easily. This is ideal for riders who look to adjust the height of their seat whilst out riding, mostly mountain bike riders looking for a different body position on downhill trails. Although there are clear benefits of using QR seat clamps, many riders choose not to use them - especially commuters who can have their seat stolen quickly. The rock solid grip of a bolt closure seat clamp is also better for road cyclists who want a secure grip. 

At Westbrook Cycles, we stock a fantastic range of Seat Clamps - working with the very best cycling component companies adding not only a stylish addition to your frame, but an important one too. Brands within this range include Cannondale, Colnago, Wolf Tooth Components and Scott

You can view the full range above, and as always - please do get in touch if you have any questions about the collection.