MTB Drivetrain & Gear Parts

MTB drivetrains are critical to smooth performance. But, similarly to other bike parts, they can get damaged over time. To keep your bike in safe working order, browse our mountain bike drivetrain parts. Top brands on sale include Shimano and in-house made Decathlon parts.
202 items
DECATHLON 3- to 8-Speed Bike Chain
DECATHLON 3- to 8-Speed Bike Chain
Rate: 4.5 stars, 1419 votes
£9.99
Was £11.99
DECATHLON 12X32 8-Speed Cassette
DECATHLON 12X32 8-Speed Cassette
Rate: 4.4 stars, 749 votes
£12.99
Was £17.99
DECATHLON 6-Speed Grip Shifter
DECATHLON 6-Speed Grip Shifter
Rate: 4.3 stars, 433 votes
£8.99
DECATHLON 9-Speed Bike Chain
DECATHLON 9-Speed Bike Chain
Rate: 4.2 stars, 604 votes
£14.99
DECATHLON 1-Speed Bike Chain
DECATHLON 1-Speed Bike Chain
Rate: 4.3 stars, 317 votes
£9.99
DECATHLON 8-Speed Derailleur Shifter
DECATHLON 8-Speed Derailleur Shifter
Rate: 4.0 stars, 136 votes
£12.99
Was £14.99
SHIMANO HG53 Tiagra / Deore 9S Chain
SHIMANO HG53 Tiagra / Deore 9S Chain
Rate: 4.4 stars, 291 votes
£17.99
DECATHLON Derailleur Dropout Replacement
DECATHLON Derailleur Dropout Replacement
Rate: 4.1 stars, 135 votes
£4.99
DECATHLON 3-Speed Derailleur Shifter
DECATHLON 3-Speed Derailleur Shifter
Rate: 4.2 stars, 291 votes
£10.99
DECATHLON 9-Speed Derailleur Shifters
DECATHLON 9-Speed Derailleur Shifters
Rate: 4.0 stars, 116 votes
£13.99
Was £15.99
DECATHLON 3-Speed Left Grip Shifter
DECATHLON 3-Speed Left Grip Shifter
Rate: 4.3 stars, 473 votes
£8.99
DECATHLON 7-Speed Derailleur Shifter
DECATHLON 7-Speed Derailleur Shifter
Rate: 4.3 stars, 289 votes
£10.99
Was £11.99
SHIMANO Triple Chainset Altus FC-MT101 3x9S
SHIMANO Triple Chainset Altus FC-MT101 3x9S
Rate: 4.8 stars, 14 votes
£34.99
DECATHLON Quick Release Links for 9-Speed Chain - Twin-Pack
DECATHLON Quick Release Links for 9-Speed Chain - Twin-Pack
Rate: 4.5 stars, 485 votes
£6.99
KMC KMC 5-8 Speed Bike Chain Z8 7.3mm 114 links
KMC KMC 5-8 Speed Bike Chain Z8 7.3mm 114 links
Rate: 4.2 stars, 73 votes
£9.99
SRAM SRAM 11 Speed Bike Chain PC1130 114 links
SRAM SRAM 11 Speed Bike Chain PC1130 114 links
£21.99
SHIMANO CS-HG400 9-Speed 11x32 Cassette Alivio
SHIMANO CS-HG400 9-Speed 11x32 Cassette Alivio
Rate: 4.6 stars, 167 votes
£19.99
DECATHLON Rear Derailleur Guard
DECATHLON Rear Derailleur Guard
Rate: 4.2 stars, 248 votes
£3.99
SRAM SRAM 9 Speed Bike Chain PC951 114 links
SRAM SRAM 9 Speed Bike Chain PC951 114 links
£17.99
DECATHLON 10-Speed Bike Chain
DECATHLON 10-Speed Bike Chain
Rate: 4.5 stars, 397 votes
£14.99
Was £15.99
DECATHLON Quick Release Links for 10-speed Chain x2
DECATHLON Quick Release Links for 10-speed Chain x2
Rate: 4.4 stars, 620 votes
£7.99
Was £8.99
SHIMANO 7/8-Speed Rear Derailleur Acera M3020
SHIMANO 7/8-Speed Rear Derailleur Acera M3020
Rate: 4.3 stars, 3 votes
£27.99
DECATHLON Derailleur Cable and Housing Kit
DECATHLON Derailleur Cable and Housing Kit
Rate: 4.5 stars, 526 votes
£9.99
Was £12.99
SRAM X4 7- to 9-Speed Rear Derailleur
SRAM X4 7- to 9-Speed Rear Derailleur
Rate: 3.9 stars, 251 votes
£19.99
SHIMANO 9-Speed Rear Derailleur Alivio M3100
SHIMANO 9-Speed Rear Derailleur Alivio M3100
Rate: 4.5 stars, 61 votes
£31.49£42.99
DECATHLON 3- to 8-Speed Quick Release Chain Links - Pack of
DECATHLON 3- to 8-Speed Quick Release Chain Links - Pack of
Rate: 4.6 stars, 873 votes
£5.99
SRAM SRAM 10 Speed Bike Chain PC1031 114 links
SRAM SRAM 10 Speed Bike Chain PC1031 114 links
£19.99
DECATHLON 7 SPEED 12x28 CASSETTE
DECATHLON 7 SPEED 12x28 CASSETTE
Rate: 4.4 stars, 292 votes
£14.99
Was £15.99
ELOPS 133 mm Topaz Square Taper Bottom Bracket
ELOPS 133 mm Topaz Square Taper Bottom Bracket
Rate: 2.5 stars, 2 votes
£7.99
DECATHLON Bike Derailleur Housing Cable Outer - Black
DECATHLON Bike Derailleur Housing Cable Outer - Black
Rate: 4.5 stars, 975 votes
£4.99
£2.50/m
KMC KMC 11 Speed Bike Chain X11 114 links
KMC KMC 11 Speed Bike Chain X11 114 links
£32.99
DECATHLON 11-Speed Bike Chain
DECATHLON 11-Speed Bike Chain
Rate: 4.4 stars, 303 votes
£17.99
DECATHLON Universal Derailleur Cable - Stainless Steel
DECATHLON Universal Derailleur Cable - Stainless Steel
Rate: 4.7 stars, 1030 votes
£3.99
DECATHLON 5-Speed Grip Shifter
DECATHLON 5-Speed Grip Shifter
Rate: 4.1 stars, 113 votes
£9.49
SHIMANO Shimano Tourney CN-HG40 116 link 6/7/8 speed Chain
SHIMANO Shimano Tourney CN-HG40 116 link 6/7/8 speed Chain
Rate: 3.0 stars, 2 votes
Sold and shipped by Sprocket and Gear Ltd
£13.34
SHIMANO Shimano BB-ES300 Bottom Bracket 68 x 113mm
SHIMANO Shimano BB-ES300 Bottom Bracket 68 x 113mm
Rate: 5.0 stars, 1 votes
Sold and shipped by Sprocket and Gear Ltd
£27.49
SHIMANO Shimano Jockey wheels 11T Deore, LX, SLX, 105, Tiagra RD-5700
SHIMANO Shimano Jockey wheels 11T Deore, LX, SLX, 105, Tiagra RD-5700
Rate: 5.0 stars, 1 votes
Sold and shipped by Sprocket and Gear Ltd
£11.59
SHIMANO Shimano HG53 9 speed 114 Links Chain
SHIMANO Shimano HG53 9 speed 114 Links Chain
Sold and shipped by Sprocket and Gear Ltd
£23.49
STRONGLIGHT Stronglight Dural 5083 130mm BCD 9 10 speed
STRONGLIGHT Stronglight Dural 5083 130mm BCD 9 10 speed
Sold and shipped by Sprocket and Gear Ltd
£31.96
SHIMANO Shimano Jockey wheels 11T Dura Ace, 11 Speed RD-9000 9070
SHIMANO Shimano Jockey wheels 11T Dura Ace, 11 Speed RD-9000 9070
Sold and shipped by Sprocket and Gear Ltd
£41.49
4.4/5 based on 15726 reviews collected online and in stores

MTB DRIVETRAIN PARTS

Without a drivetrain, your mountain bike won’t be going anywhere. If it becomes damaged by time, weathering or an accident, you’ll want to replace the damaged components to prevent other elements breaking, ensuring your MTB stays safe and usable. Decathlon has a full range of MTB drivetrain parts – high quality at affordable prices.

Be sure to look after your drivetrain by cleaning it after rides – particularly wet and muddy ones. Grit, dirt and water can damage the drivetrain in a variety of ways and shorten its lifespan, so keeping it clean is a good idea.

You may want to upgrade your drivetrain in order to increase the number of gears your mountain bike can switch between or change to a one by system. If that’s the case, explore our range of MTB cassettes and gear shifters. If you need other bits and pieces, check out our mountain bike accessories, mountain bike partsandmountain bike maintenance equipmentsections. And for your stopping needs, it’s all about ourmountain bike brakes page.