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Seat
Clamps

Gusset

Clench Seatclamp

£7.99
Available Sizes

Giant

Propel Advanced Seatclamp Cover

£9.99

Giant

Defy Advanced Seatclamp Cover

£9.99

Cannondale

30.9mm Seatpost Clamp For CAAD 10/CAAD X 2017/CAAD Optimo/Slate

£9.99

Giant

523Q Aluminium Seatclamp - 35mm

£9.99

Giant

CL95-SUB Seatclamp - 34.9mm

£9.99

Giant

LP09G Seatclamp - Red

£9.99
Available Sizes

Giant

G21SPV Seatpost Clamp Rubber Cover

£9.99

Giant

JD-SC10 QR Seatclamp

£9.99

Giant

Integrated Seat Clamp Cover

£9.99

Giant

Antherm 29 Seatclamp (2021)

£9.99

Giant

JD-SC10 Aluminium Seatclamp - 34.9 x 33.5mm

£9.99

Scott

Addict Seatclamp (30.2mm)

£10.00

Scott

Solace Seatclamp (31.2mm)

£10.00

Bergamont

Helix 6.0 Seatclamp (2016)

£10.00

Scott

Silence eRide Seat Clamp (2020)

£10.00

Bergamont

Revox MGN Seatpost Clamp

£10.00

Bergamont

Summerville N3 Seatpost Clamp

£10.00

Bergamont

Vitox ATB Ladies Seatpost Clamp (2014)

£10.00

Bergamont

Helix 8.4 Seatpost Clamp (2014)

£10.00

Scott

31.8mm Kalloy QR Seatclamp

£10.00

Scott

34.4mm Bolted Seatclamp For CR1 (2013)

£10.00

Scott

34.9mm QR Seatclamp

£10.00

Scott

34.9mm Seatclamp With Cromoly Bolt

£10.00

Scott

38.9mm QR Seatclamp For Gambler (2008)

£10.00

Giant

TCR ISC Rubber Cover - 20.2 x 33.5mm (2025)

£10.00

Giant

CL-M5B 35mm Bolted Seat Clamp

£10.00

Giant

ISC Rubber Cover For Defy Advanced Pro And SL (2024)

£10.00

Giant

TCR Advanced And Advanced Pro Seat Clamp

£10.99

Giant

Propel Advanced Seatpost Clamp

£10.99

Giant

34.9mm Quick Release Seat Clamp With Pannier Rack Mounts

£11.00

Giant

31.8mm Quick Release Seat Clamp With Pannier Rack Mounts

£11.00

Giant

SCS03X Seatclamp For XTC Advanced

£11.00

Giant

CL-GANTH Seat Clamp

£11.00

Cannondale

34.9mm Seat Clamp For Bad Habit 2016-2017/Habit 2016

£11.49  
Was  £12.99   | Save  £1.50   (12%)

Giant

G16SC2 Integrated Seatpost Clamp For Trinity Advanced

£11.99

Giant

D-Fuse Seat Post Collar With Rack Mounts

£12.00

Giant

ISC Cover For 2021 TCR

£12.00

Giant

Propel ISC Cover (2022)

£12.00

Giant

Defy ISC Cover (2023)

£12.00

Orbea

34.9mm Seatpost Clamp

£12.00

Orbea

31.8mm Seatpost Clamp

£12.00

Cannondale

QR Seatbinder (31.8mm)

£12.99
Available Colours

CUBE

Seatpost Cover For Cross Race C:68 (2023)

£13.00

Giant

Seatclamp With Stainless Bolt

£13.99

CUBE

Seatpost Clamp For Stereo, Reaction, Nuride And Kathmandu Hybrid (2025)

£14.00

Orbea

Rallon RS Seatpost Clamp - 34.9mm (2027)

£14.00

Giant

TCR/Defy Vector Aero Seat Clamp

£14.99

Giant

Integrated Seatpost Clamp For 2017 TCX SLR And Brava SLR

£14.99

Giant

ISC Clamp For 2025 TCR

£14.99

Giant

D-Fuse Seat Clamp - DFSC01

From  £14.99

Giant

Integrated Seat Clamp For 2019 Defy

£14.99

Giant

Seatpost Clamp - 20.2 x 33.5mm

£14.99

Giant

TCR ISC Seatclamp

£14.99

Cannondale

31.8mm Seatbinder With Rack Mounts

£14.99

Scott

38.9 mm Seatclamp (JD-RC)

£15.00

Scott

38.4mm QR Seatclamp (JD-MC)

£15.00

Giant

Seatclamp For Older XTC, Trance And Anthem Models

£15.99

CUBE

Universal Integrated Seat Clamp

£16.00

Orbea

Keram Seatpost Clamp - 34.9mm

£17.00

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.