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SKU: RD0774

Shimano XT RD-M8120-SGS 12-Speed Long Cage Rear Derailleur with Hyperglide+ Technology, Shadow RD+ for Superior Shifting, Shockless Performance, Durable Black Alloy Construction, Ideal for 2x Drivetrains, Mountain Tackle & Trail Riding

Regular price $137.79
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Description
Specifications

Boost your mountain biking experience with the Shimano XT RD-M8120-SGS Rear Derailleur - the ultimate 12-speed, long cage component designed for precision shifts and durability. Crafted in sleek black, this derailleur seamlessly integrates into 2x drivetrain systems, delivering optimal performance on rugged terrains.

Materials & Construction:

Built with high-quality aluminum and composite materials, the Shimano XT RD-M8120-SGS ensures lightweight durability and resistance to harsh trail conditions. The robust construction minimizes weight (only 284 grams) while maximizing strength, making it an ideal choice for aggressive riding.

Performance & Engineering:

Experience lightning-fast, shockless gear changes thanks to Shimano's innovative HYPERGLIDE+ technology, which provides smooth and precise shifting across all gears. The long cage design accommodates a wide gear range up to 45 teeth, enabling smoother shifting under load and improved chain management on steep climbs. The inclusion of a large 13-tooth pulley reduces friction, enhances efficiency, and prolongs drivetrain lifespan.

Components & Technology:

This derailleur features Shimano Shadow RD+ technology, significantly reducing chain slap and noise for a quieter, more stable ride. The low-profile design includes an integrated bumper on the derailleur pulley cage for added protection against impacts. Compatibility with Shimano mountain bike shifters (10x1 standard) ensures seamless integration and reliable performance in challenging off-road environments.

Style & Use Case:

Designed for serious mountain bikers, the Shimano XT RD-M8120-SGS excels in technical trail riding, enduro, and cross-country racing. The sleek black finish complements any mountain bike aesthetic, while its durable yet lightweight build stands up to demanding riding conditions.

Innovative Features:

- 12-speed gear compatibility for expansive gear ranges

- Long cage for precise shifting in 2x drivetrain setups

- Hyperglide+ technology for rapid, shockless shifting

- Shimano Shadow RD+ technology for reduced chain slap and noise

- Compatibility with Shimano mountain bike shifters

- Large 13t pulley for enhanced efficiency

Optimize your mountain bike's drivetrain with the Shimano XT RD-M8120-SGS Rear Derailleur - engineered for durability, precision, and quiet operation on all your off-road adventures. Upgrade today for smoother, faster shifts and a more confident ride.

  • Advanced Materials and Engineering: Crafted with durable, lightweight aluminum alloy, the Shimano XT RD-M8120-SGS Rear Derailleur delivers reliable performance while minimizing weight for enhanced riding efficiency on rugged terrains and trail rides.
  • Performance & Technology Innovation: Featuring Shimano's HYPERGLIDE+ technology, this 12-speed derailleur ensures fast, smooth, and shockless shifting across all gear combinations, even under demanding riding conditions.
  • Components & Design Features: Equipped with a large 13-tooth pulley and a low-profile, long cage design, the derailleur provides up to 45-tooth cog compatibility, maximizing gear range and maintaining optimal chain tension for superior drivetrain performance.
  • Style & Use Case: Designed with an elegant black finish and a sleek, low-profile profile with a bumper-enhanced pulley cage, this derailleur combines style and function, perfect for serious mountain bikers seeking quiet, precise shifts on challenging trails.
  • Innovative & Differentiating Features: Incorporating Shimano Shadow RD+ technology, the derailleur minimizes chain slap and noise, offering a quieter, more stable ride-making it ideal for aggressive trail riding and all-mountain adventures.
Largest Cog45
ColorBlack
Rear Der/Shifter CompatibilityShimano Mountain
Rear Derailleur Mount Type10x1 Standard
Drivetrain Speeds12
Weight284
Chain Wrap Capacity (teeth)45
Cage LengthLong
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Customer Reviews

Based on 23 reviews
87%
(20)
4%
(1)
9%
(2)
0%
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r
ryan

Legit! Came fast ! Products came from a brown box and not the retail shimano box..Rd and shifter working good and smooth . No issues ! Will buy again for future drivetrain upgrades.;

S
Stephan

Tolles Schaltwerk zur angemessenen Preis. Als Ersatzteil für mein neues Fahrrad gekauft und bereits benötigt da das Original Teil nach kurzer Zeit bereits einen Fehler in der Kupplung aufwies. Sicherlich war das ein Produktionsfehler von Shimano. Sowas kann immer mal passieren. Das hier gekauft die Schaltwerk verrichtet nun schon seit mehreren 1000 km seinen Dienst zuverlässig.;

b
bikeboy50

This is is the 8120 2x12 derailer and is not supposed to handle the 51 rear cog. It is exactly tje same as the 8100 1x 12; no difference! It works great on my 1x12, 51 tooth cassette! Less than half the cost!;

S
Shawn

Bullet-proof design and flawless manufacturing combine to make this Shimano component a great 'bang for your buck' purchase. This is my second one of these (this one's for my new bike) and the first one I bought has 750 miles of trouble free performance.;

A
A. Favela

I upgraded my Kona from a 1x10 to a 1x12 drivetrain. The xt derailleur shifts smooth and does well when shifting while on an incline. Highly recommend the upgrade;