Gear Components
Gear components range from chains and sprockets to controls and electronic connections. Identify your system family before servicing or upgrading. Compare mechanical or electronic operation and manufacturer compatibility alongside gear count.
Gear Components collection
Shimano Dura-Ace Di2 ST-R9270-R Right Gear Brake Lever IR9270DRRDSC170F
Shimano Dura-Ace Di2 ST-R9270-L Left Gear Brake Lever IR9270DLF6SC100F
Shimano Dura-Ace Di2 RD-R9250 Rear Derailleur IRDR9250F 23GK100A047
Shimano Shifter and Brake Lever ST-EF500 3x8 Set ESTEF5002PV8A3
Shimano Ultegra RD-6800 Reel Set Y5YC98140
Shimano 10 Speed Compatible Chain CN-HG54 116 Links (Without Box)
Shimano Nexus 3s SL-3S42E Left Shift Lever Longgrip ESL3S42EALS
Everything About Cycling Clothing
Browse the Collection
Shimano Front Derailleur Triple 6/7 Speed 31.8mm Clamp 42T FD-TY500-TS6
Shimano Nexus SL-3S35E 3 Speed Right Gear Shifter Black
Shimano XTR CN-M9100 12 Speed Compatible Chain 126L ICNM9100126Q
Shimano Cues SL-U6000-10R Right Shift Lever Rapidfire+ ESLU600010RAP
Shimano 105 12 Cassette Ruble 11-34T CS-R7101 ICSR710112134
Shimano Cues Cs-Lg400-10 11-39T Cassette Ruble ECSLG40010139
Shimano Deore XT RD-M8120 12 Speed Rear Derailleur Long Leg Shadow+
Ybn 10 Gear Compatible Powerlink Chain Lock
Shimano Ultegra Di2 RD-R8150 12 Speed Compatible Bicycle Rear Derailleur Direct Mount
Bracket Cover Set for Shimano ST-R9120 Shift Lever Y0C698010
Shimano Altus Rd-M310 7-8 Gear Compatible Rear Derailleur
Shimano Tourney Rd-Ty300D 6-7S Rear Derailleur
Shimano Cues CS-LG300-9 11-41T Cassette Ruble 9 Speed
Consider the whole system when changing one part
Derailleurs, shifters, cassette and chain must meet each other's requirements. Equal gear counts do not always form a compatible system. Electronic parts have battery, charger, cable and software requirements too. Read each groupset component; do not assume brakes or bottom bracket are included. Assess the problem and component condition first: newer models are not always direct replacements.
- List existing component model codes.
- Check frame attachment, freehub body and crank compatibility.
- Match spares with the component's service information.
Is matching gear count enough?
No. System family, controls and other interfaces matter too. Read manufacturer pairing information.
Does an electronic charger fit every battery?
Verify supported battery and connection type. Compare charger code with exact battery model instead of relying on appearance.
