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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 127 Products
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)
SRAM GX Eagle T-Type AXS Transmission Rear Derailleur (Black) (12 Speed)
$400.00
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SRAM GX Eagle T-Type AXS Transmission Rear Derailleur (Black) (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)
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)
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 Deore RD-M5120 Rear Derailleur (Black) (10/11 Speed) (Long Cage) (SGS)
Average Rating:3
$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 XTR RD-M9100 Rear Derailleur (Black) (1 x 12 Speed)
$273.99
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Shimano XTR RD-M9100 Rear Derailleur (Black) (1 x 12 Speed) (Shadow Plus)
Shimano Deore XT RD-M8000 Rear Derailleur (Black) (11 Speed)
$79.99 - $84.99
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Shimano Deore XT RD-M8000 Rear Derailleur (Black) (11 Speed) (Shadow Plus)
Shimano Altus FD-M313-6 Front Derailleur (3 x 7/8 Speed) (28.6/31.8/34.9mm)
$19.75
Sale: $15.80
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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)
SRAM GX Rear Derailleur (Black) (10 Speed)
$62.99 - $70.99
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SRAM GX Rear Derailleur (Black) (10 Speed) (Clutch)
SRAM GX Eagle Rear Derailleur (Lunar) (12 Speed) (Long Cage)
$135.00
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SRAM GX Eagle Rear Derailleur (Lunar) (12 Speed) (Long Cage) (Clutch)
Available in Stores
SRAM X-4 Rear Derailleur (Black) (7-9 Speed) (Long Cage)
$28.99
Sale: $27.49
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SRAM X-4 Rear Derailleur (Black) (7-9 Speed) (Long Cage)
Available in Stores
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)
SRAM GX Rear Derailleur (Black) (1 x 11 Speed) (Long Cage)
Average Rating:5
$115.99
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SRAM GX Rear Derailleur (Black) (1 x 11 Speed) (Long Cage) (Clutch)
Shimano Deore XT RD-M8100 Rear Derailleur (Black) (12 Speed) (Shadow Plus)
$118.99 - $121.99
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Shimano Deore XT RD-M8100 Rear Derailleur (Black) (12 Speed) (Shadow Plus)
Microshift Advent Rear Derailleur (Black) (9 Speed)
$43.99 - $58.99
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Microshift Advent Rear Derailleur (Black) (9 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)
Shimano Altus RD-M310-S Rear Derailleur (Silver) (7/8 Speed) (Long Cage)
$25.49
Sale: $17.99
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Shimano Altus RD-M310-S Rear Derailleur (Silver) (7/8 Speed) (Long Cage)
Shimano Deore FD-M6000 Front Derailleur (3 x 10 Speed)
$20.45 - $32.99
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Shimano Deore FD-M6000 Front Derailleur (3 x 10 Speed) (Side Swing) (Front Pull)
Shimano SLX RD-M7000 Rear Derailleur (Grey) (11 Speed) (Medium Cage) (GS)
Average Rating:5
$70.99
Sale: $64.99
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Shimano SLX RD-M7000 Rear Derailleur (Grey) (11 Speed) (Medium Cage) (GS) (Shadow Plus)
Available in Stores
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 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 Tourney RD-TY300 Rear Derailleur (Black) (6/7 Speed)
$7.99 - $13.99
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Shimano Tourney RD-TY300 Rear Derailleur (Black) (6/7 Speed)
SRAM Apex XPLR D1 Rear Derailleur (Black) (12 Speed)
$124.99
Sale: $99.99
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SRAM Apex XPLR D1 Rear Derailleur (Black) (12 Speed) (Mechanical)
Shimano Deore RD-M6000 Rear Derailleur (Black) (10 Speed)
$59.49 - $63.89
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Shimano Deore RD-M6000 Rear Derailleur (Black) (10 Speed) (Shadow Plus)
Shimano Altus FD-M310-6 Front Derailleur (3 x 7/8 Speed) (28.6/31.8/34.9mm)
$17.49
Sale: $15.99
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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)
SRAM X5 Rear Derailleur (Black) (9 Speed)
$47.49
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SRAM X5 Rear Derailleur (Black) (9 Speed)
Shimano Altus FD-M371-6 Front Derailleur (3 x 9 Speed) (28.6/31.8/34.9mm)
$21.49
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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 Alivio FD-M3120 Front Derailleur (2 x 9 Speed)
$24.49
Sale: $18.37
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Shimano Alivio FD-M3120 Front Derailleur (2 x 9 Speed) (Side Swing) (Front Pull)
SRAM SX Eagle Rear Derailleur (Black) (12 Speed) (Long Cage)
$84.99
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SRAM SX Eagle Rear Derailleur (Black) (12 Speed) (Long Cage) (Clutch)
Shimano CUES RD-U8020 Rear Derailleur (Black) (11-Speed) (Long Cage) (SGS)
$74.99
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Shimano CUES RD-U8020 Rear Derailleur (Black) (11-Speed) (Long Cage) (SGS) (Shadow Plus)
Expected Thu, Feb 13, 2025
Shimano Alivio FD-M3100-M Front Derailleur (3 x 9 Speed) (28.6/31.8/34.9mm)
$24.49
Sale: $18.37
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Shimano Alivio FD-M3100-M Front Derailleur (3 x 9 Speed) (28.6/31.8/34.9mm) (Side Swing)
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
Microshift M26C Rear Derailleur (Black) (7/8 Speed)
$13.99
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Microshift M26C Rear Derailleur (Black) (7/8 Speed) (For 13-34t Freewheel)
Shimano Deore XT Di2 RD-M8150-12 Rear Derailleur (Black) (12 Speed) (Long Cage) (SGS)
$374.99
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Shimano Deore XT Di2 RD-M8150-12 Rear Derailleur (Black) (12 Speed) (Long Cage) (SGS) (Shadow Plus) (Electronic) (E-MTB)
Shimano Deore XT FD-M8000 Front Derailleur (3 x 11 Speed) (E-Type)
$42.49
Sale: $27.62
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Shimano Deore XT FD-M8000 Front Derailleur (3 x 11 Speed) (E-Type) (Side Swing) (Front Pull)
Shimano Deore XT RD-M8120 Rear Derailleur (Black) (Shadow Plus) (2 x 12-Speed) (Long Cage) (SGS)
$118.99
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Shimano Deore XT RD-M8120 Rear Derailleur (Black) (Shadow Plus) (2 x 12-Speed) (Long Cage) (SGS)
Shimano Acera RD-M3020-8 Rear Derailleur (Black) (7/8 Speed) (Long Cage) (SGS)
$28.99
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Shimano Acera RD-M3020-8 Rear Derailleur (Black) (7/8 Speed) (Long Cage) (SGS)
Available in Stores
Shimano Deore FD-M4100 Front Derailleur (2 x 10 Speed)
$20.62 - $23.24
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Shimano Deore FD-M4100 Front Derailleur (2 x 10 Speed) (Side Swing) (Front Pull) (48.8/51.8mm Chainline)
Box Three Prime 9 Derailleur (Black) (9 Speed) (X-Wide Cage)
$83.99
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Box Three Prime 9 Derailleur (Black) (9 Speed) (X-Wide Cage) (Clutch)
SRAM NX Eagle Rear Derailleur (Black) (1 x 12 Speed) (Long Cage)
$105.99
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SRAM NX Eagle Rear Derailleur (Black) (1 x 12 Speed) (Long Cage) (Clutch)
Available in Stores
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)
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-M5130 Rear Derailleur (Black) (10 Speed) (Medium Cage)
$54.99
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Shimano Deore RD-M5130 Rear Derailleur (Black) (10 Speed) (Medium Cage)
Shimano FD-TY606-L Front Derailleur (3 x 6/7/8 Speed) (Top Swing) (Dual Pull) (31.8/34.9mm)
$13.99
Sale: $10.49
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Shimano FD-TY606-L Front Derailleur (3 x 6/7/8 Speed) (Top Swing) (Dual Pull) (31.8/34.9mm)
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