Shimano Deore M5120 Rear Derailleur
Best reliable upgrade for mountain bikers seeking smoother trail performance.
This is the workhorse drivetrain upgrade that turns erratic gear changes into a seamless experience on technical trails. You sacrifice the lightweight materials of high-end racing components, but you gain a bulletproof, consistent shifting performance that handles the abuse of daily mountain biking without complaint.
$49.43
at
Bicycle Addiction
More Deore options
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Shimano Deore M6100 Rear Derailleur
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Shimano Deore M5100 Front Derailleur
$47.00
Shimano RD-M5100 Rear Derailleur
$75.00
Shimano Deore M6000 Rear Derailleur
$89.99
Shimano Deore Shadow+ Rear Derailleur
$80.00
Shimano Deore RD-M6100-SGS Rear Derailleur
$87.53
Shimano Deore RD-M5100-SGS Rear Derailleur
$63.01
Shimano Deore M6000-B2 Crankset
$199.99
Shimano Deore RD-M6000-GS Rear Derailleur
$109.99
Shimano Deore RD-M591-SGS Rear Derailleur
$69.99
Shimano Deore M5130 Rear Derailleur
$64.99
Shimano Deore FD-M4100-M Front Derailleur
$44.99
Shimano Deore M592
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Shimano RD-M5100
$69.99
Shimano Deore RD-M6250-SGS Di2
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Shimano Deore M6000 Rear Derailleur
$110.00
Shimano Deore RD-M6000-SGS
$62.11
Shimano Deore RD-T6000-SGS
$71.56
Shimano Deore RD-M5100-SGS
$75.00
Shimano Deore RD-M6000-SGS Rear Derailleur
$110.00
Shimano Deore RD-T6000-SGS
$61.07
Shimano Deore RD-M5120
$57.00
Shimano Deore M5120
$51.99
Shimano Deore Di2 M6260
$435.00
Shimano Deore Di2 RD-M6250 Rear Derailleur
$435.00
Shimano Deore RD-M6100 Rear Derailleur
$63.00
Shimano Deore RD-T6000
$73.99
Shimano Deore RD-M592 Rear Derailleur
$129.99
Who it's for
- Trail riders tackling technical, bumpy terrain
- Budget-conscious cyclists seeking high-end performance
- Aggressive mountain bikers needing reliable, long-lasting gear
Who should skip it
- Weight-obsessed racers chasing every gram
- Performance riders demanding instantaneous, crisp shifting
- Climbers requiring massive gear ranges for steep ascents
Performance breakdown
Shifting Precision
Crisp gear changes maintain momentum through technical trail sections.
Drivetrain Durability
Rugged construction withstands the harsh impacts of aggressive mountain riding.
Chain Stability
Effective clutch mechanism minimizes chain slap on rough, uneven terrain.
Installation Ease
Straightforward setup allows for quick upgrades in a home workshop.
Load Performance
Maintains consistent shifting accuracy even under heavy pedaling torque.
Weight Efficiency
Solid build prioritizes long-term reliability over ultra-lightweight racing materials.
Key Specs
Weight
454 grams
Drivetrain Speeds
11
Mount Type
Hanger
Shifting Type
Mechanical
Clutch
Yes
Series
Shimano Deore M5120
Product Type
Rear Derailleur
Know before you buy
Still have a question?
Ask Metto anything about the Shimano Deore M5120 Rear Derailleur before you decide.
