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.
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3- to 8-Speed Bike Chain
£11.99
DECATHLON

3- to 8-Speed Bike Chain

(1215)
1-Speed Bike Chain
£9.99
DECATHLON

1-Speed Bike Chain

(292)
BEST RATED
11-Speed Road/Mountain Bike Chain Shimano 105 CN-HG601 116L Quick Link
£27.99
SHIMANO

11-Speed Road/Mountain Bike Chain Shimano 105 CN-HG601 116L Quick Link

(274)
Electric Bike 10-Speed Chain
£34.99
DECATHLON

Electric Bike 10-Speed Chain

(67)
NEW ARRIVAL
11-43 10-Speed Cassette Deore Linkglide
£39.99
SHIMANO

11-43 10-Speed Cassette Deore Linkglide

BEST RATED
30T 10-/11-Speed 175 mm Chainring Deore Hollowtech II Without Casing
£59.99
SHIMANO

30T 10-/11-Speed 175 mm Chainring Deore Hollowtech II Without Casing

(2)
3-Speed Left Grip Shifter
£8.99
DECATHLON

3-Speed Left Grip Shifter

(451)
Derailleur Dropout Replacement
£4.99
DECATHLON

Derailleur Dropout Replacement

(129)
7-Speed Derailleur Shifter
£11.99
DECATHLON

7-Speed Derailleur Shifter

(273)
11-Speed 11x32 105 Cassette CS-R7000
£49.99
SHIMANO

11-Speed 11x32 105 Cassette CS-R7000

(171)
9-Speed Bike Chain
£14.99
DECATHLON

9-Speed Bike Chain

(514)
Quick Release Links for 10-speed Chain x2
£8.99
Price per Quantity £4.50unit
DECATHLON

Quick Release Links for 10-speed Chain x2

(602)
9-Speed 22/32/44T Mountain Bike Chainring Deore
Starting at
£12.99
SHIMANO

9-Speed 22/32/44T Mountain Bike Chainring Deore

(42)
Shimano Tiagra RS500 Bottom Bracket 1.37 x 24 English Hollowtech II
£21.99
SHIMANO

Shimano Tiagra RS500 Bottom Bracket 1.37 x 24 English Hollowtech II

Sold and shipped by Sprocket and Gear
Bike Brake Housing Tips
£3.29
Price per Quantity £0.33unit
DECATHLON

Bike Brake Housing Tips

(353)
HG53 Tiagra / Deore 9S Chain
£16.99
SHIMANO

HG53 Tiagra / Deore 9S Chain

(260)
11-Speed 11x51 Cassette Deore M5100
£54.99
SHIMANO

11-Speed 11x51 Cassette Deore M5100

(27)
9-Speed 11x32 Bike Cassette
£19.99
DECATHLON

9-Speed 11x32 Bike Cassette

(301)
Shimano Cassette CS-HG41-8 11 - 34T 8 speed
£26.95
SHIMANO

Shimano Cassette CS-HG41-8 11 - 34T 8 speed

Sold and shipped by Sprocket and Gear
Quick Release Links for 9-Speed Chain - Twin-Pack
£6.99
£7.99 -12%
Price per Quantity £3.50unit
DECATHLON

Quick Release Links for 9-Speed Chain - Twin-Pack

(476)
Cassette 10-speed 11X36 Shimano Deore HG50
£29.99
SHIMANO

Cassette 10-speed 11X36 Shimano Deore HG50

(30)
6/7-Speed Rear Derailleur Tourney TY500
£12.99
SHIMANO

6/7-Speed Rear Derailleur Tourney TY500

(60)
9-Speed Rear Derailleur Shifter M2010
£19.99
SHIMANO

9-Speed Rear Derailleur Shifter M2010

(13)
BEST RATED
12-Speed Single Chainring 32T SLX 170/175 mm Hollowtech II Without Casing
£84.99
SHIMANO

12-Speed Single Chainring 32T SLX 170/175 mm Hollowtech II Without Casing

(1)
Universal Derailleur Cable - Stainless Steel
£3.99
DECATHLON

Universal Derailleur Cable - Stainless Steel

(921)
7-SPEED GRIP SHIFTER
£8.99
£9.99 -10%
DECATHLON

7-SPEED GRIP SHIFTER

(393)
9-Speed Derailleur Shifters
£15.99
DECATHLON

9-Speed Derailleur Shifters

(105)
Rear Derailleur Guard
£3.99
DECATHLON

Rear Derailleur Guard

(238)
Bottom Bracket MT500 Press-Fit 92
£12.99
SHIMANO

Bottom Bracket MT500 Press-Fit 92

(6)
KMC X9 114 Link Chain 9 Speed
£21.99
KMC

KMC X9 114 Link Chain 9 Speed

Sold and shipped by Go Cycle Shop
Bike Chain 5 to 8-Speed KMC Z8.3
£9.99
KMC

Bike Chain 5 to 8-Speed KMC Z8.3

(72)
Rear Derailleur 6/7-Speed Shimano Tourney TY300
£12.99
SHIMANO

Rear Derailleur 6/7-Speed Shimano Tourney TY300

(152)
Sun Ringle SRC/SRX HG Steel Freehub Body
£17.99
ROCKRIDER

Sun Ringle SRC/SRX HG Steel Freehub Body

Gear Shifter 2-Speed Acera M3010
£17.99
SHIMANO

Gear Shifter 2-Speed Acera M3010

(2)
11-Speed Bike Chain SRAM PC1110
£14.99
SRAM

11-Speed Bike Chain SRAM PC1110

(195)
Shimano SLX M7100 12 Speed Chain OEM - 126 Links
£39.99
SHIMANO

Shimano SLX M7100 12 Speed Chain OEM - 126 Links

Sold and shipped by Sprocket and Gear
BEST RATED
Shifter Rear Derailleur 9-speed Shimano Acera
£14.99
SHIMANO

Shifter Rear Derailleur 9-speed Shimano Acera

(1)
9-Speed Rear Derailleur Alivio M3100
£29.99
SHIMANO

9-Speed Rear Derailleur Alivio M3100

(50)
Pair of Jockey Wheels 9-/10-Speed
£12.99
SHIMANO

Pair of Jockey Wheels 9-/10-Speed

(7)
7 SPEED 12x28 CASSETTE
£15.99
DECATHLON

7 SPEED 12x28 CASSETTE

(287)
4.2/5 Based on 20557 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.

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