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Shop top brands' best prices on new bike front and rear derailleurs for your mountain or electric ride's DIY upgrade, installation, or overhaul. Light, strong, high-performance, affordable components for 12, 11, 10, and 9 speed Eagle, XTR, and XT drivetrains from SRAM, Shimano, and more!

Mountain Bike Derailleur

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Showing 1 to 45 of 106 Products

Shimano Tourney RD-TX800 Rear Derailleur (Black/Silver) (7/8 Speed)

$17.99

Shimano Tourney RD-TX800 Rear Derailleur (Black/Silver) (7/8 Speed)

SRAM X01 Rear Derailleur (Black) (1 x 11 Speed)

$230.00

SRAM X01 Rear Derailleur (Black) (1 x 11 Speed) (Clutch)

SRAM GX Rear Derailleur (Black) (1 x 11 Speed)

$123.00

SRAM GX Rear Derailleur (Black) (1 x 11 Speed) (Clutch)

SRAM GX Rear Derailleur (Black) (2 x 11 Speed)

$131.00

SRAM GX Rear Derailleur (Black) (2 x 11 Speed) (Clutch)

SRAM X01 Eagle AXS Rear Derailleur (Black/Red) (12 Speed)

$538.00

SRAM X01 Eagle AXS Rear Derailleur (Black/Red) (12 Speed) (Clutch) (Electronic)

SRAM X01 Eagle Rear Derailleur (Red) (12 Speed)

$214.00

SRAM X01 Eagle Rear Derailleur (Red) (12 Speed) (Clutch)

SRAM X01 Eagle Rear Derailleur (Lunar) (12 Speed)

$214.00

SRAM X01 Eagle Rear Derailleur (Lunar) (12 Speed) (Clutch)

Box One 11S Rear Derailleur (Matte Onyx) (11 Speed)

$131.99

Box One 11S Rear Derailleur (Matte Onyx) (11 Speed) (Clutch)

Box One Rear Derailleur (Black) (11 Speed)

$157.99

Box One Rear Derailleur (Black) (11 Speed) (Clutch)

Box Two Prime 9 Derailleur (Black) (9 Speed)

$141.99

Box Two Prime 9 Derailleur (Black) (9 Speed) (Clutch)

Shimano Deore XT Di2 FD-M8070 Front Derailleur (2 x 11 Speed)

~~$182.99~~
Sale: $130.59

Shimano Deore XT Di2 FD-M8070 Front Derailleur (2 x 11 Speed) (Down Swing) (Electronic)

Shimano XTR RD-M9000 Rear Derailleur (Black) (11 Speed)

$212.99

Shimano XTR RD-M9000 Rear Derailleur (Black) (11 Speed) (Shadow Plus)

Shimano XTR RD-M9100 Rear Derailleur (Black) (1 x 12 Speed)

$273.99

Shimano XTR RD-M9100 Rear Derailleur (Black) (1 x 12 Speed) (Shadow Plus)

Shimano XTR RD-M9120 Rear Derailleur (Grey) (2 x 12-Speed)

$272.99

Shimano XTR RD-M9120 Rear Derailleur (Grey) (2 x 12-Speed) (Shadow Plus)

Sunrace RDMX60 Rear Derailleur (Black/Silver) (11/12 Speed)

$104.99

Sunrace RDMX60 Rear Derailleur (Black/Silver) (11/12 Speed)

SRAM X01 Rear Derailleur (Black/Red) (1 x 11 Speed)

$230.00

SRAM X01 Rear Derailleur (Black/Red) (1 x 11 Speed) (Clutch)

SRAM GX Rear Deralleur (Black/Red) (1 x 11 Speed)

$122.99

SRAM GX Rear Deralleur (Black/Red) (1 x 11 Speed) (Clutch)

SRAM NX Eagle Rear Derailleur (Black) (1 x 12 Speed)

$113.99

SRAM NX Eagle Rear Derailleur (Black) (1 x 12 Speed) (Clutch)

SRAM X01 Eagle AXS Rear Derailleur (Lunar) (12 Speed)

$538.00

SRAM X01 Eagle AXS Rear Derailleur (Lunar) (12 Speed) (Clutch) (Electronic)

SRAM GX Eagle Rear Derailleur (Lunar) (12 Speed)

$135.00

SRAM GX Eagle Rear Derailleur (Lunar) (12 Speed) (Clutch)

SRAM XX1 Eagle Rear Derailleur (Lunar Black) (12 Speed)

$323.00

SRAM XX1 Eagle Rear Derailleur (Lunar Black) (12 Speed) (Clutch)

Box One Prime 9 Derailleur (Black) (9 Speed)

$194.99

Box One Prime 9 Derailleur (Black) (9 Speed) (Clutch)

Box Two 11S Rear Derailleur (Matte Onyx) (11 Speed)

$109.99

Box Two 11S Rear Derailleur (Matte Onyx) (11 Speed) (Clutch)

Shimano Deore XT Di2 RD-M8050 Rear Derailleur (Black) (11 Speed)

$279.99

Shimano Deore XT Di2 RD-M8050 Rear Derailleur (Black) (11 Speed) (Shadow Plus) (Electronic)

Shimano Deore XT RD-M8100 Rear Derailleur (Black) (1 x 12 Speed)

$118.99

Shimano Deore XT RD-M8100 Rear Derailleur (Black) (1 x 12 Speed) (Shadow Plus)

Shimano XTR Di2 RD-M9050 Rear Derailleur (Black) (11 Speed)

$564.99

Shimano XTR Di2 RD-M9050 Rear Derailleur (Black) (11 Speed) (Shadow Plus) (Electronic)

SRAM GX Eagle AXS Rear Derailleur (Lunar) (12 Speed)

Average Rating:5

$390.00

SRAM GX Eagle AXS Rear Derailleur (Lunar) (12 Speed) (Clutch) (Electronic)

SRAM X1 Rear Derailleur (Black) (1 x 11 Speed)

$229.99

SRAM X1 Rear Derailleur (Black) (1 x 11 Speed) (Clutch)

SRAM XX1 Rear Derailleur (Black/Red) (1 x 11 Speed)

$324.99

SRAM XX1 Rear Derailleur (Black/Red) (1 x 11 Speed) (Clutch)

Microshift Advent X Rear Derailleur (Black) (10 Speed)

$70.99

Microshift Advent X Rear Derailleur (Black) (10 Speed) (Clutch)

Shimano Tourney RD-A070 Rear Derailleur (Black) (7 Speed)

$20.49

Shimano Tourney RD-A070 Rear Derailleur (Black) (7 Speed) (Smart Cage)

Shimano Xtr M985 2X10-Speed Multi-Clamp Top-Swing Front Derailleur For Mountain Double Cranks

$91.99

Out Of Stock In Store

Shimano Xtr M985 2X10-Speed Multi-Clamp Top-Swing Front Derailleur For Mountain Double Cranks

SRAM X-4 Rear Derailleur (Black) (7-9 Speed)

$29.99

SRAM X-4 Rear Derailleur (Black) (7-9 Speed)

SRAM X.3 Rear Derailleur (Black) (7-9 Speed)

$24.00

SRAM X.3 Rear Derailleur (Black) (7-9 Speed)

SRAM GX Front Derailleur (2 x 11 Speed)

$39.99

SRAM GX Front Derailleur (2 x 11 Speed) (Bottom Pull)

Box Three Prime 9 Derailleur (Black) (9 Speed)

$83.99

Box Three Prime 9 Derailleur (Black) (9 Speed) (Clutch)

Box Four Prime 9 Derailleur (Black) (8 Speed)

$68.99

Box Four Prime 9 Derailleur (Black) (8 Speed) (Clutch)

Shimano Tourney FD-A070-A Front Derailleur (2 x 7 Speed)

$20.49

Shimano Tourney FD-A070-A Front Derailleur (2 x 7 Speed) (Bottom Pull)

Shimano Altus FD-M2000 Front Derailleur (3 x 9 Speed)

$19.75

Shimano Altus FD-M2000 Front Derailleur (3 x 9 Speed) (Dual Pull)

Shimano Acera FD-M3000 Front Derailleur (3 x 9 Speed)

$25.99

Shimano Acera FD-M3000 Front Derailleur (3 x 9 Speed) (Top Swing) (Dual Pull)

Shimano Alivio FD-M3100-M Front Derailleur (3 x 9 Speed)

$24.99

Shimano Alivio FD-M3100-M Front Derailleur (3 x 9 Speed) (Side Swing)

Shimano Altus FD-M313-6 Front Derailleur (3 x 7/8 Speed)

$19.99

Shimano Altus FD-M313-6 Front Derailleur (3 x 7/8 Speed) (Down Swing) (Dual Pull)

Shimano Tourney FD-TX800 Front Derailleur (3 x 7/8 Speed)

$14.99

Shimano Tourney FD-TX800 Front Derailleur (3 x 7/8 Speed) (Top Swing) (Dual Pull)

Shimano Tourney FD-TY500-TS6 Front Derailleur (3 x 6/7 Speed)

$11.99

Shimano Tourney FD-TY500-TS6 Front Derailleur (3 x 6/7 Speed) (Top Swing) (Dual Pull) (42T Max)

Shimano Altus RD-M310-S Rear Derailleur (Silver) (7/8 Speed)

$27.99

Shimano Altus RD-M310-S Rear Derailleur (Silver) (7/8 Speed)