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Mountain Derailleurs

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

Mountain Derailleurs

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Showing 1 to 45 of 128 Products
Shimano Deore XT RD-M8100 Rear Derailleur (Black) (12 Speed) (Shadow Plus)
$105.99 - $118.99
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Shimano Deore XT RD-M8100 Rear Derailleur (Black) (12 Speed) (Shadow Plus)
SRAM XX SL T-Type Eagle AXS Transmission Rear Derailleur (Black) (12 Speed)
$650.00
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SRAM XX SL T-Type Eagle AXS Transmission Rear Derailleur (Black) (12 Speed)
Shimano Deore RD-M5120 Rear Derailleur (Black) (10/11 Speed) (Long Cage) (SGS)
Average Rating:1
$38.99
Sale: $34.99
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Shimano Deore RD-M5120 Rear Derailleur (Black) (10/11 Speed) (Long Cage) (SGS) (Shadow Plus)
Shimano Deore XT RD-M786 Rear Derailleur (Black) (10 Speed)
$78.19 - $79.99
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Shimano Deore XT RD-M786 Rear Derailleur (Black) (10 Speed) (Shadow Plus)
Shimano Acera RD-M3020-8 Rear Derailleur (Black) (7/8 Speed) (Long Cage) (SGS)
$31.99
Sale: $30.99
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Shimano Acera RD-M3020-8 Rear Derailleur (Black) (7/8 Speed) (Long Cage) (SGS)
Available in Stores
SRAM GX Eagle AXS Rear Derailleur (Lunar) (12 Speed) (Long Cage)
$390.00
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SRAM GX Eagle AXS Rear Derailleur (Lunar) (12 Speed) (Long Cage) (Clutch) (Electronic)
Microshift ADVENT Super Short Rear Derailleur (Black) (1 x 9 Speed) (Short Cage) (w/ Clutch)
$58.99
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Microshift ADVENT Super Short Rear Derailleur (Black) (1 x 9 Speed) (Short Cage) (w/ Clutch)
SRAM GX Rear Derailleur (Black) (10 Speed)
$61.99 - $70.99
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SRAM GX Rear Derailleur (Black) (10 Speed) (Clutch)
Shimano SLX RD-M7000 Rear Derailleur (Grey) (11 Speed) (Medium Cage) (GS)
Average Rating:5
$70.99
Sale: $54.99
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Shimano SLX RD-M7000 Rear Derailleur (Grey) (11 Speed) (Medium Cage) (GS) (Shadow Plus)
Available in Stores
Shimano Deore XT Di2 RD-M8050 Rear Derailleur (Black) (11 Speed) (Medium Cage) (GS)
$329.99
Sale: $259.99
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Shimano Deore XT Di2 RD-M8050 Rear Derailleur (Black) (11 Speed) (Medium Cage) (GS) (Shadow Plus) (Electronic)
SRAM XX T-Type Eagle AXS Transmission Rear Derailleur (Black/Silver) (12 Speed)
$650.00
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SRAM XX T-Type Eagle AXS Transmission Rear Derailleur (Black/Silver) (12 Speed)
Shimano Deore RD-M5100 Rear Derailleur (Black) (11 Speed) (Long Cage) (SGS)
$45.99
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Shimano Deore RD-M5100 Rear Derailleur (Black) (11 Speed) (Long Cage) (SGS) (Shadow Plus)
Shimano XTR RD-M9000 Rear Derailleur (Black) (11 Speed) (Long Cage) (SGS)
Average Rating:5
$212.99
Sale: $189.99
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Shimano XTR RD-M9000 Rear Derailleur (Black) (11 Speed) (Long Cage) (SGS) (Shadow Plus)
Shimano Tourney RD-TX800 Rear Derailleur (Black/Silver) (7/8 Speed) (Long Cage) (SGS)
$19.99
Sale: $14.99
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Shimano Tourney RD-TX800 Rear Derailleur (Black/Silver) (7/8 Speed) (Long Cage) (SGS)
Available in Stores
Shimano Tourney RD-TY300 Rear Derailleur (Black) (6/7 Speed)
$7.99 - $11.24
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Shimano Tourney RD-TY300 Rear Derailleur (Black) (6/7 Speed)
Shimano Alivio RD-M3100 Rear Derailleur (Black) (9 Speed) (Long Cage) (SGS)
$36.99
Sale: $31.44
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Shimano Alivio RD-M3100 Rear Derailleur (Black) (9 Speed) (Long Cage) (SGS) (Shadow)
SRAM GX Rear Derailleur (Black/Red) (1 x 11 Speed) (Long Cage)
$122.99
Sale: $118.99
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SRAM GX Rear Derailleur (Black/Red) (1 x 11 Speed) (Long Cage) (Clutch)
Shimano Altus FD-M370-6 Front Derailleur (3 x 9 Speed) (28.6/31.8/34.9mm)
$19.49
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Shimano Altus FD-M370-6 Front Derailleur (3 x 9 Speed) (28.6/31.8/34.9mm) (Top Swing) (Dual Pull)
Shimano Deore RD-M6000 Rear Derailleur (Black) (10 Speed)
$53.99 - $63.89
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Shimano Deore RD-M6000 Rear Derailleur (Black) (10 Speed) (Shadow Plus)
Shimano Altus RD-M310-L Rear Derailleur (Black) (7/8 Speed) (Long Cage)
$27.49
Sale: $19.99
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Shimano Altus RD-M310-L Rear Derailleur (Black) (7/8 Speed) (Long Cage)
Available in Stores
Shimano Altus FD-M313-6 Front Derailleur (3 x 7/8 Speed) (28.6/31.8/34.9mm)
$19.25
Sale: $14.39
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Shimano Altus FD-M313-6 Front Derailleur (3 x 7/8 Speed) (28.6/31.8/34.9mm) (Down Swing) (Dual Pull)
Box One Rear Derailleur (Black) (11 Speed) (Wide Cage)
$157.99
Sale: $142.19
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Box One Rear Derailleur (Black) (11 Speed) (Wide Cage) (Clutch)
Shimano Altus RD-M370 Rear Derailleur (Black) (9 Speed) (Long Cage) (SGS)
$28.49
Sale: $27.49
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Shimano Altus RD-M370 Rear Derailleur (Black) (9 Speed) (Long Cage) (SGS)
Expected Sun, Dec 1, 2024
Shimano Altus FD-M310-6 Front Derailleur (3 x 7/8 Speed) (28.6/31.8/34.9mm)
$17.99
Sale: $13.49
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Shimano Altus FD-M310-6 Front Derailleur (3 x 7/8 Speed) (28.6/31.8/34.9mm) (Top Swing) (Dual Pull)
Shimano Deore RD-M6100 Rear Derailleur (Black) (12 Speed) (Long Cage) (SGS)
$56.99
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Shimano Deore RD-M6100 Rear Derailleur (Black) (12 Speed) (Long Cage) (SGS) (Shadow Plus)
Microshift Advent X V2 Rear Derailleur (Grey) (10 Speed) (Clutch) (Medium Cage)
$72.99
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Microshift Advent X V2 Rear Derailleur (Grey) (10 Speed) (Clutch) (Medium Cage)
Shimano Tourney FD-A070-A Front Derailleur (2 x 7 Speed) (28.6/31.8mm)
$19.75
Sale: $13.83
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Shimano Tourney FD-A070-A Front Derailleur (2 x 7 Speed) (28.6/31.8mm) (Bottom Pull)
Shimano Tourney FD-TX800 Front Derailleur (3 x 7/8 Speed)
$10.49 - $11.24
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Shimano Tourney FD-TX800 Front Derailleur (3 x 7/8 Speed) (Top Swing) (Dual Pull)
Shimano Deore RD-M592 Rear Derailleur (Black) (9 Speed) (Long Cage) (SGS)
Average Rating:3
$50.99
Sale: $43.34
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Shimano Deore RD-M592 Rear Derailleur (Black) (9 Speed) (Long Cage) (SGS) (Shadow)
Shimano Tourney RD-A070 Rear Derailleur (Black) (7 Speed)
$15.37 - $22.99
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Shimano Tourney RD-A070 Rear Derailleur (Black) (7 Speed) (Smart Cage)
Shimano Altus FD-M371-6 Front Derailleur (3 x 9 Speed) (28.6/31.8/34.9mm)
$21.99
Sale: $19.49
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Shimano Altus FD-M371-6 Front Derailleur (3 x 9 Speed) (28.6/31.8/34.9mm) (Down Swing) (Dual Pull)
Shimano Deore XT RD-M8000 Rear Derailleur (Black) (11 Speed)
$84.99 - $85.49
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Shimano Deore XT RD-M8000 Rear Derailleur (Black) (11 Speed) (Shadow Plus)
Shimano Deore FD-M5100 Front Derailleur (2 x 11 Speed)
$23.62 - $30.49
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Shimano Deore FD-M5100 Front Derailleur (2 x 11 Speed) (Side Swing) (Front Pull) (48.8/51.8mm Chainline)
Shimano CUES RD-U6000-GS Rear Derailleur (Black) (1 x 10/11 Speed) (Medium Cage) (GS)
$69.99
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Shimano CUES RD-U6000-GS Rear Derailleur (Black) (1 x 10/11 Speed) (Medium Cage) (GS) (Shadow +)
Shimano Tourney FD-TY601-L3 Front Derailleur (3 x 6/7/8 Speed) (31.8/34.9mm)
$13.99
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Shimano Tourney FD-TY601-L3 Front Derailleur (3 x 6/7/8 Speed) (31.8/34.9mm) (Top Swing) (Dual Pull) (48T Max)
Expected Tue, Nov 19, 2024
SRAM NX Rear Derailleur (Black) (1 x 11 Speed) (Long Cage)
$82.99
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SRAM NX Rear Derailleur (Black) (1 x 11 Speed) (Long Cage) (Clutch)
Shimano CUES RD-U4020-SGS Rear Derailleur (Black) (9 Speed) (Medium Cage) (SGS)
$42.99
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Shimano CUES RD-U4020-SGS Rear Derailleur (Black) (9 Speed) (Medium Cage) (SGS) (Shadow)
Shimano SLX RD-M7100 Rear Derailleur (Black) (1 x 12 Speed) (Long Cage) (SGS)
$78.99
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Shimano SLX RD-M7100 Rear Derailleur (Black) (1 x 12 Speed) (Long Cage) (SGS) (Shadow Plus)
Shimano Altus RD-M310-S Rear Derailleur (Silver) (7/8 Speed) (Long Cage)
$25.49
Sale: $19.12
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Shimano Altus RD-M310-S Rear Derailleur (Silver) (7/8 Speed) (Long Cage)
Microshift M26 Rear Derailleur (Black) (7/8 Speed) (Long Cage)
$14.49
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Microshift M26 Rear Derailleur (Black) (7/8 Speed) (Long Cage) (Shimano Compatible)
SRAM X-4 Rear Derailleur (Black) (7-9 Speed) (Long Cage)
$27.99
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SRAM X-4 Rear Derailleur (Black) (7-9 Speed) (Long Cage)
Available in Stores
Microshift M21 Rear Derailleur (Black) (6/7 Speed)
$11.99
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Microshift M21 Rear Derailleur (Black) (6/7 Speed)
Shimano Tourney FD-TY600-L6 Front Derailleur (3 x 6/7/8 Speed) (31.8/34.9mm)
$13.99
Sale: $9.79
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Shimano Tourney FD-TY600-L6 Front Derailleur (3 x 6/7/8 Speed) (31.8/34.9mm) (Top Swing) (Dual Pull) (42T Max)
Shimano Acera RD-T3000 Rear Derailleur (Black) (9 Speed) (Long Cage) (SGS)
$33.99
Sale: $30.99
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Shimano Acera RD-T3000 Rear Derailleur (Black) (9 Speed) (Long Cage) (SGS)
Shimano Tourney RD-TZ500 Rear Derailleur (Black) (6 Speed)
$10.49 - $11.99
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Shimano Tourney RD-TZ500 Rear Derailleur (Black) (6 Speed)
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