FREE U.S. Shipping on orders of $99 or more*. See complete details >

Account
Cart

Check Store Availability

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

Search within Mountain

Sort By:

View As: List | Grid

Showing 1 to 45 of 106 Products

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

$109.99

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

Shimano Deore RD-M6000 Rear Derailleur (Black) (10 Speed)

$70.99

Shimano Deore RD-M6000 Rear Derailleur (Black) (10 Speed) (Shadow Plus)

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-M6100 Rear Derailleur (Black) (12 Speed)

$56.99

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

Shimano Deore RD-M4120 Rear Derailleur (Black) (10/11 Speed)

$42.99

Shimano Deore RD-M4120 Rear Derailleur (Black) (10/11 Speed) (Shadow)

Shimano Deore RD-M5120 Rear Derailleur (Black) (10/11 Speed)

$48.49

Shimano Deore RD-M5120 Rear Derailleur (Black) (10/11 Speed) (Shadow Plus)

Shimano SLX RD-M7000 Rear Derailleur (Grey) (11 Speed)

Average Rating:5

$70.99

Shimano SLX RD-M7000 Rear Derailleur (Grey) (11 Speed) (Shadow Plus)

Microshift XLE Mountain Rear Derailleur (Black) (10 Speed)

$38.99

Microshift XLE Mountain Rear Derailleur (Black) (10 Speed) (Shimano Compatible)

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) (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)

$122.99

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

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

$132.99

SRAM GX Rear Derailleur (Black) (2 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)

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)

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

$194.99

Box One Prime 9 Derailleur (Black) (9 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 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

SRAM X1 Rear Derailleur (Black) (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 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)