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Buy

Halo

0.8mm Cassette Spacer

£1.99
Available Sizes
Buy

Gusset

1-ER Singlespeed Converter With 16 & 18T Cogs

£19.99
Buy

Shimano

10-Speed E-Bike Chain (138 Links)

£38.99  
Was  £42.99   | Save  £4.00   (9%)
Box MTB
Buy

Wolf Tooth Components

104 BCD Chainring - Drop-Stop B

£71.00
Buy

Wolf Tooth Components

104 BCD Chainring For Shimano 12 Speed

£71.00
Buy

Praxis Works

104 BCD Narrow Wide 1x Chainring

£55.00
Available Sizes
Buy

Praxis Works

104 BCD Narrow Wide 1x Direct Threaded Steel E-Bike Chainring

£30.00
Available Sizes
Buy

OneUp Components

104 BCD Traction Oval Chainring

From  £49.50
Buy

Giant

104BCD Gates Belt Drive Spider And Chainguard For 46T Cog

£50.00
Buy

5Dev

104BCD Titanium Chainring

£149.99
Available Sizes
Buy

Shimano

105 5701 10 Speed Rear Derailleur

From  £44.99  
Was  £49.99   | Save  £5.00   (10%)
Buy

Shimano

105 5800 / SLX M7000 11-Speed Chain (116 Links)

£29.50  
Was  £34.99   | Save  £5.49   (16%)
Buy

Shimano

105 Di2 R7150 12-Speed Braze-On Front Derailleur

£127.99  
Was  £149.99   | Save  £22.00   (15%)
Buy

Shimano

105 Di2 R7150 12-Speed Rear Derailleur

£233.99  
Was  £274.99   | Save  £41.00   (15%)
Buy

Shimano

105 FC5800 11-Speed Chainring

From  £17.99  
Was  £19.99   | Save  £2.00   (10%)
Available Sizes
Buy

Shimano

105 FCR7000 11-Speed Chainring

From  £17.99  
Was  £19.99   | Save  £2.00   (10%)
Buy

Shimano

105 HG700 11-Speed Cassette

£53.99  
Was  £59.99   | Save  £6.00   (10%)
Available Sizes
Buy

Shimano

105 HG710 12-Speed Cassette (11-36T)

£76.99  
Was  £84.99   | Save  £8.00   (9%)
Available Sizes
Buy

Shimano

105 R7000 11 Speed Rear Derailleur

From  £49.99  
Was  £54.99   | Save  £5.00   (9%)
Buy

Shimano

105 R7000 11-Speed Cassette

From  £49.99  
Was  £54.99   | Save  £5.00   (9%)
Available Sizes
Buy

Shimano

105 R7000 11-Speed Front Derailleur

From  £37.99  
Was  £41.99   | Save  £4.00   (10%)
Buy

Shimano

105 R7000 11-Speed STI Lever (Pair)

£206.99  
Was  £229.99   | Save  £23.00   (10%)
Buy

Shimano

105 R7000 Crankset

£143.99  
Was  £159.99   | Save  £16.00   (10%)
Buy

Shimano

105 R7000 Replacement Jockey Wheels

£9.99  
Was  £10.99   | Save  £1.00   (9%)
Buy

Shimano

105 R7020 11-Speed STI Lever

£166.99  
Was  £184.99   | Save  £18.00   (10%)
Buy

Shimano

105 R7020 STI Lever With Flat Mount Caliper

£251.99  
Was  £279.99   | Save  £28.00   (10%)
Buy

Shimano

105 R7025 11-Speed STI Lever

£166.99  
Was  £184.99   | Save  £18.00   (10%)
Buy

Shimano

105 R7100 12-Speed Cassette (11-34T)

£62.99  
Was  £69.99   | Save  £7.00   (10%)
Buy

Shimano

105 R7100 12-Speed Crankset

£135.99  
Was  £159.99   | Save  £24.00   (15%)
Buy

Shimano

105 R7170 Di2 11-Speed STI Lever

£224.99  
Was  £249.99   | Save  £25.00   (10%)
Buy

Shimano

105 R7170 Di2 STI Lever With Flat Mount Caliper

£314.99  
Was  £349.99   | Save  £35.00   (10%)
Finance From £7.00/mo
Buy

Shimano

105 RS510 11-Speed Crankset

£125.99  
Was  £139.99   | Save  £14.00   (10%)
Buy

Wolf Tooth Components

107 BCD Chainring for SRAM - Drop Stop B

£90.00
Available Sizes
Buy

Wolf Tooth Components

107 BCD Sram Aero Chainring - Drop Stop B

£117.00
Available Sizes
Buy

KMC

11 Speed DLC Chain (118 Links)

£89.99  
Was  £99.99   | Save  £10.00   (10%)
Available Colours
Black Blue Black/Red Green +
Buy

Hope Technology

11 Tooth Jockey Wheel

£21.00  
Was  £22.50   | Save  £1.50   (7%)
Available Colours
Black Blue Orange Purple +
Buy

Hope Technology

11 Tooth Jockey Wheels (Pair)

£41.00  
Was  £45.00   | Save  £4.00   (9%)
Available Colours
Black Blue Orange Purple +
Buy

Shimano

11-Speed E-Bike Chain (138 Links)

£53.99  
Was  £58.99   | Save  £5.00   (8%)
Buy

Shimano

11-Speed Quick Link (2 Pack)

£13.99  
Was  £14.99   | Save  £1.00   (7%)
Buy

SRAM

11-Speed X-Glide Road Outer Chain Ring 5-Bolt 130BCD

From  £128.00  
Was  £142.00   | Save  £14.00   (10%)
Available Sizes
Buy

Wolf Tooth Components

110 BCD Asymmetric 4-Bolt Aero Chainring For GRX Cranks - Drop Stop ST

£113.00
Available Sizes
Buy

Wolf Tooth Components

110 BCD Asymmetric 4-bolt Chainring for Shimano GRX Cranks (Drop-Stop ST)

£88.00
Buy

Wolf Tooth Components

110 BCD Chainring for Asymmetric 4-bolt Shimano Cranks

£88.00
Available Sizes
Buy

Wolf Tooth Components

110 BCD Cyclocross Chainring (Sram Flat Top Chain)

£88.00
Available Sizes
Buy

Praxis Works

110 BCD Narrow Wide 1x Chainring

From  £90.00
Available Sizes
Buy

Praxis Works

110 BCD Narrow Wide 1x Direct Threaded E-Bike Chainring

£105.00
Available Sizes
Buy

Giant

110BCD Spider With 50T and 34T Chainrings

£100.00
Buy

Cannondale

119mm Ai Complete Bottom Bracket For SuperX 2017

£77.99  
Was  £85.99   | Save  £8.00   (9%)
Buy

Cannondale

119mm Ai Hollowgram Crank Spindle

£40.49  
Was  £44.99   | Save  £4.50   (10%)
Buy

OneUp Components

12 Speed Chainring - 104BCD

From  £48.00  
Was  £52.99   | Save  £4.99   (9%)
Buy

KMC

12 Speed DLC Chain (126 Links)

£89.99  
Was  £99.99   | Save  £10.00   (10%)
Available Colours
Black Black/Red Black/Blue Black/Green +
Buy

Hope Technology

12 Speed Shimano Retainer Chainring (Spiderless)

£33.00  
Was  £55.00   | Save  £22.00   (40%)
Available Colours
Black Blue Orange Purple +
Buy

Hope Technology

12 Tooth Jockey Wheel

£21.00  
Was  £22.50   | Save  £1.50   (7%)
Available Colours
Black Blue Orange Purple +
Buy

Hope Technology

12 Tooth Jockey Wheels

£41.00  
Was  £45.00   | Save  £4.00   (9%)
Available Colours
Black Blue Orange Purple +
Buy

SRAM

12-Speed Flat Top Powerlock Chain Connector (4 Pack) - Rainbow

£16.00  
Was  £17.00   | Save  £1.00   (6%)
Buy

Shimano

12-Speed Quick Link (2 Pack)

£13.99  
Was  £14.99   | Save  £1.00   (7%)
Buy

Cannondale

125mm Ai Complete Bottom Bracket For SuperX 2017

£76.99  
Was  £84.99   | Save  £8.00   (9%)
Buy

Cannondale

125mm Ai Hollowgram Crank Spindle

£40.49  
Was  £44.99   | Save  £4.50   (10%)
Buy

absoluteBLACK

12T XX1/X01/X1/CX1 Pulleys For Sram 11-Speed

£46.99
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The range of transmission components & spares we carry is huge - we aim to support a wide range of customers with their complete range of transmission requirements. Parts within the range include both road bike and mountain bike components. We have broken down the range of transmission parts into a good level of sub-categories to make it easier than ever for you to find exactly what you need.

There are chainrings, chains, road bike chainsets, cassettes and chainrings - sold alongside electric mountain bike components and gearing components, including gear levers and shifters. Some of the most popular products within the range include bottom brackets and chain devices. There are a range of brands represented within this collection, including Shimano, KMC, Praxis Works, Hope Technology and bike manufacturers such as Cannondale.