Bike Drivetrains & Gear Parts

Your bike drivetrain consists of all the parts that allow you to pedal and move your bike. Shop our range of drivetrains and gear parts at Decathlon. We have everything you need to take your drivetrain system up a gear.
59 items
DECATHLON 12X32 8-Speed Cassette
DECATHLON 12X32 8-Speed Cassette
Rate: 4.4 stars, 749 votes
£12.99
Was £17.99
DECATHLON 8-Speed Derailleur Shifter
DECATHLON 8-Speed Derailleur Shifter
Rate: 4.0 stars, 136 votes
£12.99
Was £14.99
DECATHLON 3-Speed Derailleur Shifter
DECATHLON 3-Speed Derailleur Shifter
Rate: 4.2 stars, 291 votes
£10.99
DECATHLON 7-Speed Derailleur Shifter
DECATHLON 7-Speed Derailleur Shifter
Rate: 4.3 stars, 289 votes
£10.99
Was £11.99
SHIMANO HG53 Tiagra / Deore 9S Chain
SHIMANO HG53 Tiagra / Deore 9S Chain
Rate: 4.4 stars, 290 votes
£17.99
DECATHLON Derailleur Dropout Replacement
DECATHLON Derailleur Dropout Replacement
Rate: 4.1 stars, 135 votes
£4.99
DECATHLON 9-Speed Derailleur Shifters
DECATHLON 9-Speed Derailleur Shifters
Rate: 4.0 stars, 116 votes
£13.99
Was £15.99
SHIMANO Deore HG54 10-Speed Chain
SHIMANO Deore HG54 10-Speed Chain
Rate: 4.3 stars, 300 votes
£17.99
DECATHLON 11-Speed 11X28 Road Bike Cassette
DECATHLON 11-Speed 11X28 Road Bike Cassette
Rate: 4.1 stars, 173 votes
£24.99
Was £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, 484 votes
£6.99
DECATHLON 12x25 8-Speed Cassette
DECATHLON 12x25 8-Speed Cassette
Rate: 4.4 stars, 150 votes
£16.99
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 11-Speed Bike Chain SRAM PC1110
SRAM 11-Speed Bike Chain SRAM PC1110
Rate: 4.5 stars, 214 votes
£14.99
KMC KMC 10 Speed Bike Chain X10 114 links
KMC KMC 10 Speed Bike Chain X10 114 links
£23.99
SHIMANO CS-HG400 9-Speed 11x32 Cassette Alivio
SHIMANO CS-HG400 9-Speed 11x32 Cassette Alivio
Rate: 4.6 stars, 167 votes
£19.99
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, 398 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
DECATHLON Derailleur Cable and Housing Kit
DECATHLON Derailleur Cable and Housing Kit
Rate: 4.5 stars, 524 votes
£9.99
Was £12.99
DECATHLON 10-Speed 11x28 Road Bike Cassette
DECATHLON 10-Speed 11x28 Road Bike Cassette
Rate: 4.3 stars, 290 votes
£19.99
Was £27.99
SRAM SRAM 11 Speed Bike Chain PC1130 114 links
SRAM SRAM 11 Speed Bike Chain PC1130 114 links
£21.99
SRAM X4 7- to 9-Speed Rear Derailleur
SRAM X4 7- to 9-Speed Rear Derailleur
Rate: 3.9 stars, 251 votes
£19.99
DECATHLON 7 SPEED 12x28 CASSETTE
DECATHLON 7 SPEED 12x28 CASSETTE
Rate: 4.4 stars, 292 votes
£14.99
Was £15.99
DECATHLON 5-Speed 14x28 Screw-On Freewheel
DECATHLON 5-Speed 14x28 Screw-On Freewheel
Rate: 4.2 stars, 95 votes
£12.99
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
KMC KMC 12 Speed Bike Chain X12 126 links
KMC KMC 12 Speed Bike Chain X12 126 links
£32.99
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, 974 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, 302 votes
£17.99
DECATHLON Universal Derailleur Cable - Stainless Steel
DECATHLON Universal Derailleur Cable - Stainless Steel
Rate: 4.7 stars, 1026 votes
£3.99
DECATHLON Crank Arm Tightening Bolts
DECATHLON Crank Arm Tightening Bolts
Rate: 4.5 stars, 219 votes
£3.99
Was £4.99
DECATHLON NEOPRENE BIKE CHAINSTAY COVER
DECATHLON NEOPRENE BIKE CHAINSTAY COVER
Rate: 4.2 stars, 495 votes
£9.99
SHIMANO 11-Speed 11x32 105 Cassette CS-R7000
SHIMANO 11-Speed 11x32 105 Cassette CS-R7000
Rate: 4.8 stars, 190 votes
£49.99
DECATHLON Triple Chainwheel Front Derailleur
DECATHLON Triple Chainwheel Front Derailleur
Rate: 4.3 stars, 386 votes
£14.99
DECATHLON 10-Speed Derailleur Shifter
DECATHLON 10-Speed Derailleur Shifter
Rate: 3.3 stars, 41 votes
£17.99
DECATHLON 6-Speed 14x28 Screw-On Freewheel
DECATHLON 6-Speed 14x28 Screw-On Freewheel
Rate: 4.2 stars, 272 votes
£14.99
SRAM SRAM 7-8 Speed Bike Chain PC850 114 links
SRAM SRAM 7-8 Speed Bike Chain PC850 114 links
£14.99
DECATHLON 7-Speed 14x28 Screw-On Freewheel
DECATHLON 7-Speed 14x28 Screw-On Freewheel
Rate: 4.1 stars, 548 votes
£14.99