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Bicycle Gearing System

For transmissions, there are levers and rear derailleur. A rear derailleur is a transmission in the rear part of a bicycle. With the rear derailleur, you can enjoy various shift stages. In general, there are 10 levels in addition to 7 to 8. The rear derailleur can be adjusted by yourself, and if you do not adjust it, the ride comfort of the bicycle will be worse. Also note that the optimal rear derailleur changes depending on whether it is attached to a mountain bike or road bike.

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  1. ALTUS Rear Derailleur
    SHIMANO ALTUS Rear Derailleur
    Bracket  Direct attachment 
    Rating:
    89%
    (17)
    from S$38.99
    Min. 2 days
  2. FD-TX800-TS6
    SHIMANO FD-TX800-TS6
    Top swing front derailleur for 3X7 / 8 speed with outer gear 42 / 48T. Dual pull type that supports both upper and lower cable routes.
    Material  Steel  Type  20T (capacity)  Angle  66-69 ° (chainstay angle) 
    Rating:
    100%
    (1)
    from S$28.99
    Min. 2 days
  3. RD-M370 SGS
    SHIMANO RD-M370 SGS
    Corresponding end shape: Direct mounting type Pulley cage: SGS / Direct mounting Rear compatible speed: 9 speed Corresponding top gear (minimum / maximum) 11 / 11T Corresponding low gear (minimum / maximum) 28 / 34T Total capacity: 45T
    Bracket  Direct attachment 
    from S$47.99
    Min. 2 days
  4. ULTEGRA Front Derailleur (Brazed-on Mount) 2x11-speed
    SHIMANO ULTEGRA Front Derailleur (Brazed-on Mount) 2x11-speed
    Shimano Ultegra FD-R8000 Directly attached 2 × 11S Front derailleur When using as a band type, please use SM-AD91.
    from S$88.99
    Min. 10 days
  5. Rear derailleur RD-4700-SS
    SHIMANO Rear derailleur RD-4700-SS
    Stable shifting performance Smooth and light shifting operation New cable pitch design
    Number of Teeth  Maximum front difference / 16T  Bracket  Direct attachment  Pulley  SS 
    from S$74.99
    Min. 9 days
  6. RD6-C60FC-C Carbon cage / 16T & 20T / Full ceramic bearing
    RIDEA RD6-C60FC-C Carbon cage / 16T & 20T / Full ceramic bearing
    Larger diameter of the rear derailleur Reduces inertial loss of the chain and improves output efficiency Highly rigid and reliable cage structure Excellent accuracy and smoothness during shifting, and smoothly supports quick shifting Reduces friction on the chain Smooth Power that reduces rotatio... Read More
    Number of Teeth  16T&20T 
    from S$999.90
    Min. 5 days
  7. RD1-C88FC Rear Derailleur Cage
    RIDEA RD1-C88FC Rear Derailleur Cage
    Larger diameter rear derailleur. Reduces chain inertia loss and improves output efficiency. Achieves smoother rotation by reducing the friction of the chain. Reliable cage structure with high rigidity. Smoothly supports quick shifting. Reduces noise. Power that can be demonstrated stably. Can be ... Read More
    Color  carbon 
    from S$569.90
    Min. 5 days
  8. SUPER + RECORD + rear mecha + 12s (2020)
    Campagnolo SUPER + RECORD + rear mecha + 12s (2020)
    Campagnolo's smoothest, fastest and most accurate shift: Advanced 12-speed format * Use this rear mechanism when using the 11-34 sprocket set. 3D Embrace Technology for better power efficiency, system life and shift performance Larger pulley wheels and new cage design allow for extremely vers... Read More
    from S$1,099.00
    Min. 7 days
  9. RD4-C88FC Carbon cage / 18T & 18T / Full ceramic bearing
    RIDEA RD4-C88FC Carbon cage / 18T & 18T / Full ceramic bearing
    Larger diameter of the rear derailleur Reduces inertial loss of the chain and improves output efficiency Highly rigid and reliable cage structure Excellent accuracy and smoothness during shifting, and smoothly supports quick shifting Reduces friction on the chain Smooth Power that reduces rotatio... Read More
    Number of Teeth  18T&18T 
    from S$859.90
    Min. 5 days
  10. Bell Crank Cover with Fixing Screw
    SHIMANO Bell Crank Cover with Fixing Screw
    Color  Gray 
    Rating:
    96%
    (48)
    from S$4.59
    Min. 2 days
  11. Bell crank cover with fixing bolt
    SHIMANO Bell crank cover with fixing bolt
    Repair and replacement bell crank cover
    Color  Black 
    Rating:
    94%
    (16)
    from S$4.89
    Min. 2 days
  12. RD-TY500 Track Fork End
    SHIMANO RD-TY500 Track Fork End
    Top normal derailleur for 7/6 speed with regular claw end
    Suitable for  7/6 speed  Material  Steel  Mounting  Direct attachment 
    Rating:
    87%
    (3)
    from S$28.99
    Min. 2 days
  13. RD-TY500SGS reverse nail
    SHIMANO RD-TY500SGS reverse nail
    Top normal derailleur for 7/6 speed with reverse claw end * The image will be attached directly.
    Suitable for  7/6 speed  Material  Steel  Mounting  Inverted claw 
    Rating:
    60%
    (5)
    from S$28.99
    Min. 34 days
  14. Band adapter M size SM-AD91-MS
    SHIMANO Band adapter M size SM-AD91-MS
    Shimano DI2 band adapter M size SM-AD91-MS Clamp band diameter: 31.8mm (28.6mm adapter included)
    Rating:
    100%
    (2)
    from S$19.99
    Min. 2 days
  15. Band adapter L size SM-AD91-L
    SHIMANO Band adapter L size SM-AD91-L
    Shimano DI2 band adapter L size SM-AD91-L Clamp band diameter: Φ34.9mm
    from S$18.99
    Min. 2 days
  16. Bell crankset
    SHIMANO Bell crankset
    Color  Gray 
    Rating:
    84%
    (5)
    from S$18.99
    Min. 2 days
  17. RD6-C38FC-C Carbon cage / 13T & 18T / Full ceramic bearing
    RIDEA RD6-C38FC-C Carbon cage / 13T & 18T / Full ceramic bearing
    Larger diameter of the rear derailleur Reduces inertial loss of the chain and improves output efficiency Highly rigid and reliable cage structure Excellent accuracy and smoothness during shifting, and smoothly supports quick shifting Reduces friction on the chain Smooth Power that reduces rotatio... Read More
    Number of Teeth  13T&18T 
    from S$759.90
    Min. 5 days
  18. Rear Derailleur RD-4700-GS
    SHIMANO Rear Derailleur RD-4700-GS
    Stable shifting performance Smooth and light shifting operation New cable pitch design
    Bracket  Direct attachment  Pulley  GS 
    from S$74.99
    Min. 6 days
  19. Front derailleur FD-4700
    SHIMANO Front derailleur FD-4700
    Achieves more stable mounting and rigidity with the new HG- × chain and chain guide support bolt that fits the gear shape (direct mounting type)
    Angle (°)  (Chain stay) 61-66 
    from S$56.99
    Min. 6 days
  20. RDHL28 Rear Derailleur Hanger
    RIDEA RDHL28 Rear Derailleur Hanger
    Parts that prevent interference between the enlarged pulley and cassette sprocket Connect between the rear end when fixing the rear derailleur Can be extended by 28 mm RIDEA "Rear Derailleur Cage" Corresponds to the following part numbers RD6
    Color  Black 
    from S$66.99
    Min. 5 days
  21. RDHL20 Rear Derailleur Hanger
    RIDEA RDHL20 Rear Derailleur Hanger
    Parts that prevent interference between the larger diameter pulley and cassette sprocket. Connected to the rear end when fixing the rear derailleur. Can be extended by 22 mm.
    Color  Black / red 
    from S$119.90
    Min. 6 days
  22. RDHL22 Rear Derailleur Hanger
    RIDEA RDHL22 Rear Derailleur Hanger
    Parts that prevent interference between the larger diameter pulley and cassette sprocket. Connected to the rear end when fixing the rear derailleur. Can be extended by 22 mm.
    Color  Black 
    Rating:
    100%
    (1)
    from S$63.99
    Min. 6 days
  23. Ultegra FD-R8000 Band Type Φ34.9mm 2 X 11-Stage Front Derailleur
    SHIMANO Ultegra FD-R8000 Band Type Φ34.9mm 2 X 11-Stage Front Derailleur
    Shimano FD-R8000 Band type Φ34.9mm 2 × 11S Front derailleur
    from S$99.90
    Min. 6 days
  24. GRX FD-RX400 2X10-stage front derailleur
    SHIMANO GRX FD-RX400 2X10-stage front derailleur
    from S$57.99
    Min. 6 days
  25. TDT3 Derailleur Spacer
    RIDEA TDT3 Derailleur Spacer
    Spacer (shim) that shifts the position of the front derailleur backward by 3 mm Precision aluminum CNC machining
    Material  Aluminum  Mass (g)  1.3 
    from S$22.99
    Min. 5 days
  26. CHORUS + front mechanism + 12s (direct attachment)
    Campagnolo CHORUS + front mechanism + 12s (direct attachment)
    Front derailleur for 12s
    Bracket  Direct attachment 
    from S$259.90
    Min. 9 days
  27. PYL1-10TS Pulley 10T
    RIDEA PYL1-10TS Pulley 10T
    AL7075-T6 Aluminum lightweight pulley (10T x 2) Uses high precision steel bearings and can be used for both quiet and smooth rotation guide pulleys (upper side) and tension pulleys (lower side) * Cannot be used for guide pulleys of some grades of slam.
    Number of Teeth  10T  Mass (g)  17 
    Rating:
    80%
    (1)
    from S$63.99
    Min. 6 days
  28. FDSB F Derailleur Adapter
    RIDEA FDSB F Derailleur Adapter
    AL7075-T6 CNC machined aluminum front derailleur mounting bracket (pedestal). For Birdy MK2 only. * It is recommended to use a 3mm spacer for BB when using a triple crank. * Recommended capacity 50T-56T. * Birdy MK2: 2005-2014, 2015.1-6.
    Color  Red  Mass (g)  42 
    from S$129.90
    Min. 6 days
  29. SPARES + front mechanism + clamp
    Campagnolo SPARES + front mechanism + clamp
    Conversion clamp for record direct mounting front derailleur This clamp converts the direct mounting type front derailleur made by Black Campagnolo to the band type. Also compatible with the direct-attached front derailleur of the electric shift "EPS" series. Clamp only sold. (Please pu... Read More
    Color  Black 
    from S$63.99
    Min. 9 days
  30. SUPER + RECORD + front mechanism + 12s + (direct attachment) (19 ~)
    Campagnolo SUPER + RECORD + front mechanism + 12s + (direct attachment) (19 ~)
    A lighter touch has been added with the addition of springs to support the upshift direction. Cable clamp bolts can be attached in front of or behind the arm to prevent the arm from touching when using wide tires.
    Mass (g)  79  Bracket  Direct attachment 
    from S$459.90
    Min. 9 days
  31. RECORD + front mechanism + 12s + (direct attachment) (19 ~)
    Campagnolo RECORD + front mechanism + 12s + (direct attachment) (19 ~)
    A lighter touch with the addition of springs to support the upshift direction. Cable clamp bolts can be attached in front of or behind the arm to prevent the arm from touching when using wide tires. Unique inner cage setting Aluminum outer cage CSD (Chain Secure Device) Clamp band Two types of fr... Read More
    Bracket  Direct attachment 
    Rating:
    100%
    (1)
    from S$289.90
    Min. 9 days
  32. CENTAUR + rear mechanism + 11s (18 to 20) + silver
    Campagnolo CENTAUR + rear mechanism + 11s (18 to 20) + silver
    Redesigned rear derailleur orbit angle (45 degrees) One rear derailleur for all sprocket combinations Pulley with bearing Upper pulley with long tooth tips Lower pulley with rounded tooth tips Ultra-lightweight technopolymer upper and low body reinforced with fiberglass Limit screw located on the... Read More
    Color  Silver  before-and-after division  For rear 
    from S$199.90
    Min. 9 days
  33. RD6-C35FC-C Carbon cage / 13T & 15T / Full ceramic bearing
    RIDEA RD6-C35FC-C Carbon cage / 13T & 15T / Full ceramic bearing
    Larger diameter of the rear derailleur Reduces inertial loss of the chain and improves output efficiency Highly rigid and reliable cage structure Excellent accuracy and smoothness during shifting, and smoothly supports quick shifting Reduces friction on the chain Smooth Power that reduces rotatio... Read More
    Number of Teeth  13T&15T  Color  Logo: black 
    from S$669.90
    Min. 5 days
  34. RD5-C35FC-C Carbon cage / 13T & 15T / Full ceramic bearing
    RIDEA RD5-C35FC-C Carbon cage / 13T & 15T / Full ceramic bearing
    Larger diameter of the rear derailleur Reduces inertial loss of the chain and improves output efficiency Highly rigid and reliable cage structure Excellent accuracy and smoothness during shifting, and smoothly supports quick shifting Reduces friction on the chain Smooth Power that reduces rotatio... Read More
    Number of Teeth  13T&15T  Color  Logo: black 
    from S$669.90
    Min. 5 days
  35. Stem mount shifter ENE STEM MOUNT SHIFTER
    DIA-COMPE Stem mount shifter ENE STEM MOUNT SHIFTER
    What is the power ratchet Non-Index type? A small cam that activates the ratchet function is built in the lever. This cam engages with the ratchet side one step at a time. When pulling the lever, there is little resistance and it can be pulled lightly. Since there is resistance in the return dire... Read More
    Material  Made of aluminium  Mass (g)  110 
    from S$229.90
    Min. 10 days
  36. CHORUS + rear mechanism + 12s
    Campagnolo CHORUS + rear mechanism + 12s
    Rear derailleur for 12s
    from S$429.90
    Min. 9 days
  37. PYL1-11TS Pulley 11T
    RIDEA PYL1-11TS Pulley 11T
    AL7075-T6 Aluminum lightweight pulley (11T x 2) Uses high precision steel bearings and can be used for both quiet and smooth rotation guide pulleys (upper side) and tension pulleys (lower side) * Cannot be used for guide pulleys of some grades of slam.
    Number of Teeth  11T  Mass (g)  18 
    from S$63.99
    Min. 6 days
  38. RD-USRS Rear Derailleur Dropout Stopper
    RIDEA RD-USRS Rear Derailleur Dropout Stopper
    Color  Red 
    from S$34.99
    Min. 6 days
  39. EPS+EPS+RECORD+Front mechanism+11s (direct attachment) (15~)
    Campagnolo EPS+EPS+RECORD+Front mechanism+11s (direct attachment) (15~)
    Campagnolo RECORD EPS Directly Attached 11S Front Derailleur Originally Designed Aluminum Inner Semi-Cage: "Used by professional teams from the 2014 season as part of the Improved Shifting Project. Accurate even when upshifting with force. We promise a quiet shift. Low and upper body made of... Read More
    Material  Technopolymer & carbon body  Number of Teeth  Maximum: 55T, Minimum: 34T  Mass (g)  133  Bracket  Direct attachment  Conform to  Double crankset compatible  Waterproof Specifications  IP67 
    from S$1,199.00
    Min. 9 days
  40. PYLX-18TS Hollow Plate Pulley 18T
    RIDEA PYLX-18TS Hollow Plate Pulley 18T
    Number of Teeth  18T 
    from S$159.90
    Min. 5 days
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