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.
34 items
DECATHLON 12X32 8-Speed Cassette
DECATHLON 12X32 8-Speed Cassette
Rate: 4.4 stars, 749 votes
£12.99
Was £17.99
DECATHLON 10-Speed Bike Chain
DECATHLON 10-Speed Bike Chain
Rate: 4.5 stars, 397 votes
£14.99
Was £15.99
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
DECATHLON 11-Speed Quick Release Links - Twin-Pack
DECATHLON 11-Speed Quick Release Links - Twin-Pack
Rate: 4.5 stars, 311 votes
£8.99
Was £9.99
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 7-Speed Derailleur Shifter
DECATHLON 7-Speed Derailleur Shifter
Rate: 4.3 stars, 289 votes
£10.99
Was £11.99
DECATHLON Derailleur Dropout Replacement
DECATHLON Derailleur Dropout Replacement
Rate: 4.1 stars, 135 votes
£4.99
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
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 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
DECATHLON Derailleur Cable and Housing Kit
DECATHLON Derailleur Cable and Housing Kit
Rate: 4.5 stars, 526 votes
£9.99
Was £12.99
DECATHLON 12x25 8-Speed Cassette
DECATHLON 12x25 8-Speed Cassette
Rate: 4.4 stars, 150 votes
£16.99
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
DECATHLON Triple Chainwheel Front Derailleur
DECATHLON Triple Chainwheel Front Derailleur
Rate: 4.3 stars, 387 votes
£14.99
DECATHLON 7 SPEED 12x28 CASSETTE
DECATHLON 7 SPEED 12x28 CASSETTE
Rate: 4.4 stars, 292 votes
£14.99
Was £15.99
DECATHLON 8 to 9 Speed Rear Derailleur
DECATHLON 8 to 9 Speed Rear Derailleur
Rate: 4.3 stars, 17 votes
£24.99
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
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 Crank Arm Tightening Bolts
DECATHLON Crank Arm Tightening Bolts
Rate: 4.5 stars, 220 votes
£3.99
Was £4.99
DECATHLON NEOPRENE BIKE CHAINSTAY COVER
DECATHLON NEOPRENE BIKE CHAINSTAY COVER
Rate: 4.2 stars, 496 votes
£9.99
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 5-Speed 14x28 Screw-On Freewheel
DECATHLON 5-Speed 14x28 Screw-On Freewheel
Rate: 4.2 stars, 95 votes
£12.99
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
DECATHLON Quick Release Links for 1-speed Bike Chain x 2
DECATHLON Quick Release Links for 1-speed Bike Chain x 2
Rate: 4.3 stars, 167 votes
£5.99
DECATHLON Derailleur Hose Tips
DECATHLON Derailleur Hose Tips
Rate: 4.4 stars, 365 votes
£2.99
Was £3.29
DECATHLON Bike Brake Housing Tips
DECATHLON Bike Brake Housing Tips
Rate: 4.5 stars, 493 votes
£2.99
Was £3.29
DECATHLON 9-Speed 12x25 Road Bike Cassette
DECATHLON 9-Speed 12x25 Road Bike Cassette
Rate: 4.0 stars, 136 votes
£19.99
DECATHLON 7-Speed 14x28 Screw-On Freewheel
DECATHLON 7-Speed 14x28 Screw-On Freewheel
Rate: 4.1 stars, 548 votes
£14.99
DECATHLON Universal Anti Friction Derailleur Cable
DECATHLON Universal Anti Friction Derailleur Cable
Rate: 4.7 stars, 584 votes
£4.99
£2.27/m
DECATHLON 11-Speed 11X32 Road Bike Cassette
DECATHLON 11-Speed 11X32 Road Bike Cassette
£29.99
Out of stock