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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 105 Products

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 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 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)

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

~~$254.99~~
Sale: $130.59

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

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

~~$132.99~~
Sale: $127.99

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

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

$229.99

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

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

$121.99

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

~~$354.99~~
Sale: $339.99

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)

$390.00

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

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)

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

$324.99

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

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

$229.99

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

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

~~$237.99~~
Sale: $232.99

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

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

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

$70.99

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

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

~~$23.49~~
Sale: $20.49

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

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

~~$27.99~~
Sale: $23.99

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

Shimano Acera RD-M360 Rear Derailleur (Silver) (7/8 Speed)

~~$31.99~~
Sale: $27.49

Shimano Acera RD-M360 Rear Derailleur (Silver) (7/8 Speed)

Shimano Altus RD-M370 Rear Derailleur (Black) (9 Speed)

~~$29.49~~
Sale: $25.49

Shimano Altus RD-M370 Rear Derailleur (Black) (9 Speed)

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

~~$20.99~~
Sale: $17.99

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

Shimano Tourney RD-TY500 Rear Derailleur (Black) (6/7 Speed)

~~$18.25~~
Sale: $15.75

Shimano Tourney RD-TY500 Rear Derailleur (Black) (6/7 Speed)

Shimano Deore RD-M5100 Rear Derailleur (Black) (11 Speed)

$51.99

Shimano Deore RD-M5100 Rear Derailleur (Black) (11 Speed) (Shadow Plus)

Shimano Deore RD-M591 Rear Derailleur (Black) (9 Speed)

Average Rating:5

~~$55.99~~
Sale: $52.99

Shimano Deore RD-M591 Rear Derailleur (Black) (9 Speed)

Shimano Deore RD-M592 Rear Derailleur (Black) (9 Speed)

~~$61.99~~
Sale: $50.99

Shimano Deore RD-M592 Rear Derailleur (Black) (9 Speed) (Shadow)

Shimano Deore RD-M6100 Rear Derailleur (Black) (12 Speed)

~~$88.20~~
Sale: $56.99

Shimano Deore RD-M6100 Rear Derailleur (Black) (12 Speed) (Shadow Plus)

Shimano Deore XT RD-M786 Rear Derailleur (Black) (10 Speed)

~~$168.99~~
Sale: $91.99

Shimano Deore XT RD-M786 Rear Derailleur (Black) (10 Speed) (Shadow Plus)

Shimano Deore RD-T6000 Rear Derailleur (Black) (10 Speed)

$60.99

Shimano Deore RD-T6000 Rear Derailleur (Black) (10 Speed) (Shadow)

Microshift Advent Rear Derailleur (Black) (9 Speed)

$43.99

Microshift Advent Rear Derailleur (Black) (9 Speed)