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Giant

Speed Sensor With Hirose 544-1004-2 Connector - 700mm

£18.00

Giant

On Board Charge Cable - JST 2 Pin/7-Pin - 100mm

£32.00

Giant

Ride Control One E-Bike Controller For G-System/ANT+ - 750mm (2025)

£59.00

Vision

TriMax 30 i23 Disc Wheelset - XDR Freehub

£269.99  
Was  £579.99   | Save  £310.00   (53%)

Scott

Addict Downtube Cable Cover (2026)

£15.00

Giant

MPH Semi-Hydraulic Disc Brake With Bolts - 1100mm Hose

£30.00
Available Sizes

Giant

MPH Semi-Hydraulic Disc Brake With Flatmount Adapter And Bolts - 400mm Hose

£30.00
Available Sizes

Giant

NBR 70 Cable Port For Chainstay - Right-Hand

£10.00

Giant

No. 55RA Headset With Top Cover

£60.00

Giant

No. 69 62 SRS Dual Cup Headset With Top Cover V3

£70.00

Giant

PR1 (GL30) Disc 700C Front Wheel Rim (2026)

£40.00

Giant

PR1 (GL30) Disc 700C Rear Wheel Rim (2026)

£40.00

Giant

Range Extender Strap - 100 to 450mm

£10.00

Giant

Rear Derailleur Hanger 1669-413100-01

£15.00

Giant

Rear Light Link Cable (SMK8 To DJ622) For SG 2.0 System - 1350mm

£30.00
Available Sizes

Giant

Reign Advanced E+ Rear Shock Mount Bolt Kit (2026)

£50.00

Giant

Reign Advanced E+ Swingarm Repair Kit - Lower Linkage (2026)

£70.00

Giant

Reign Advanced E+ Swingarm Repair Kit - Main Frame Pivot (2026)

£60.00

Giant

Reign Advanced E+ Swingarm Repair Kit - Rocker (2026)

£70.00

Giant

Ride Dash Evo 2.0 Y-Cable

£40.00

Giant

RideControl Dash 2 For SG 2.0 System - 700mm Cable

£150.00

Giant

RideControl Ergo 4 For SG 2.0 System - 600mm Cable

£80.00

Giant

RideControl Ergo 4 For SG 2.0 System - 700mm Cable

£90.00

Giant

RideControl Go Lux To Ergo 4 Y-Cable

£40.00

Giant

RideControl Go To Ergo 4 Y-Cable

£50.00

Giant

Right-Hand Motor Cover For Fathom And Lurra E+ (2026)

£20.00

Giant

Romero Full ESG Saddle

£30.00

Giant

Rubber Dust Cap 65A For STP (2026)

£10.00

Giant

Rubber Frame Protection Pad - 75mm x 15mm x 8mm

£10.00

Giant

Service Kit For Contact Switch SL (2026)

£20.00

Giant

SG 2.0 System Discharge Cable - 48V Battery To Motor With On Board Charge - 450mm

£150.00

Giant

SG 2.0 System Discharge Cable - 48V Range Extender To On Board Charge Port - 185mm

£60.00

Giant

Side Motor Covers For Explore And Amiti E+ (2026)

£25.00

Giant

Side Motor Coves For Explore E+ (2026)

£20.00

Giant

Skid Plate With Bolts For Reign Advanced E+ (2026)

£230.00

Giant

Small Bumper Set For Explore E+ (2026)

£20.00

Giant

SMK 8-Pin Waterproof Plug

£10.00

Giant

SP-2056 D-Fuse Seatpost - 300mm

£20.00

Giant

SP-2056 D-Fuse Seatpost - 350mm

£20.00

Giant

SP-2056 D-Fuse Seatpost - 380mm

£20.00

Giant

SP-497 2-Bolt Seatpost

£20.00

Giant

Speed Sensor Cable With Hirose 544-1004-2 Connector - 464mm

£20.00
Available Sizes

Giant

Speed Sensor With Integrated Reed Switch And Hirose 544-1004-2 Connector - 100mm Cable

£40.00

Giant

TPE Rubber Waterproof Seatpost Seal For Devote Advanced (2024)

£10.00

Giant

TR Headset Adapter Spacer

£10.00

Giant

Tracker M9201-R 28 Hole 6-Bolt Disc Brake Rear Hub - 142 x 12mm

£50.00

Giant

Tracker M9202-F 28 Hole 110 x 15mm 6-Bolt Disc Brake Front Hub

£30.00

Giant

Tracker M9204-R 28 Hole 6-Bolt Disc Brake Rear Hub 142 x 12mm

£60.00

Giant

Upper Left-Hand Plastic Cable Cap

£10.00

Giant

Upper Right-Hand Plastic Cable Cap

£10.00

Giant

Waterproof Cover For Radar Rear Light

£10.00

Giant

Waterproof Plug For Seat Clamp - 30.9mm

£10.00

Giant

Waterproof Silicone Plug For TY0704 - 6.8mm Male

£10.00

Giant

WG 68 Front Derailleur Mount

£15.00

Giant

38T Chain Cover With Brackets And Bolts For Allure E+ - Internal Gear (2026)

£40.00

Giant

38T Chain Cover Without Brackets For Allure E+ - Internal Gear (2026)

£20.00

Giant

9-Pin 48V 4A Smart Charger Without AC Power Cable

£190.00

Giant

A10BP Chainset With Plastic Chainguard And 30T Chainring - 105mm

£30.00
Available Sizes

Giant

A10BP Chainset With Plastic Chainguard And 30T Chainring - 140mm

£30.00
Available Sizes

Giant

Battery Bracket Mount Set For Allure E+ (2026)

£50.00
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Welcome to our full range of quality bike parts and components here at Westbrook Cycles. Whether you're looking to carry out a simple upgrade, or completely kit-out your favourite cycle; we offer all of the parts and specialised bike components you'll need to see the job through.

Bikes are as simple or as complicated as you want to make them, for the casual rider, there might only be a handful of bike components which are given much thought at all; whereas the serious roadie will look to optimise each intricate mechanism and part to get the absolute maximum potential out of the bike. Switching out the bigger components, such as the wheels, frames and saddle will likely have the most appreciable impact on the look, feel and performance of the bike. If you’re looking for an immediate difference maker, and don’t want to invest in a new bike, we’d recommend upgrading stock parts with quality bike components.

We’ve got one of the widest ranges of bike parts and components available anywhere online, and if you’re looking for replacement bike parts, Westbrook Cycles has it all - from drivetrain, groupset and mech parts to handlebars, specialised pedals, seatposts/seatpost spares and lightweight forks.

Upgrading your bike is one of the most enjoyable aspects of cycling, and with thousands of video tutorials online and a massive selection of bespoke components from the biggest brands in the industry, there’s no reason not to give it a try. We’ve got the latest bike components from Hope Technology, Cannondale and more. Of course if a task does get a little out of hand and you’re scratching your head trying to piece your cassette back together, head on down to see a professional & have your new bike components fitted professionally.

One of the most important and popular categories of products is our mountain bike & road bike transmission spares and components, this range encompasses everything a rider needs to bring their bikes transmission back to running perfectly, and this range includes cassettes, bottom brackets, chain rings and derailleurs.

Lastly, and possibly most importantly is a good set of tyres. This is (hopefully) the only part of the bike in contact with the ground so it is important that you have a set of tyres that you can trust and feel confident in. Our selection of road, MTB, cyclocross and gravel bike tyres are sure to give you the confidence you need to push your performance, or just give that extra layer of puncture protection.