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SKU: RD3252

Shimano XTR RD-M9100-GS 12-Speed Rear Derailleur with Clutch, Medium Cage, Low Profile Design, Gray - Precision Engineering for Mountain Bike & Trail Cycling, Durable Materials, Superior Shift Performance & Chain Stability

Regular price $266.85
$330.00 Sale price $266.85 Regular price
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Description
Specifications

Upgrade your mountain biking performance with the Shimano XTR RD-M9100-GS Rear Derailleur - the ultimate 12-speed component engineered for durability, precision, and smooth shifting on the toughest trails. Designed with advanced materials and innovative technology, this derailleur ensures superior chain stability, reduced noise, and effortless gear transitions, making it an essential addition to serious trail and enduro bikes.

Materials & Construction

Crafted with high-quality, lightweight aluminum and durable composite materials, the Shimano XTR M9100-GS delivers exceptional strength-to-weight ratio. Its sleek gray finish not only adds a modern aesthetic but also resists corrosion and abrasion, suitable for rugged mountain environments.

Performance & Engineering

Built to withstand rigorous off-road conditions, this derailleur features a low-profile design that minimizes weight and enhances ground clearance. The mid-cage length (28mm shorter than standard) facilitates optimal 1x drivetrain compatibility up to a 45-tooth sprocket, providing a wide gear range ideal for climbing steep trails or sprinting on flat sections. The Shadow RD+ clutch reduces chain slap, preventing chain derailment and ensuring a quiet, distraction-free ride.

Components & Technology

Equipped with a larger 13-tooth pulley and a low-tension setup at low gear, the Shimano XTR M9100-GS offers smooth and precise shifting performance. Its durable construction includes a 10x1 standard mount compatible with Shimano Mountain bike shifters, and a chain wrap capacity of 35 teeth, ensuring you can maximize gear options with various cassette sizes.

Style & Use Case

Designed for high-end mountain biking, this derailleur excels on enduro, trail, and all-mountain bikes where durability, reliability, and performance are paramount. Its sleek gray finish complements modern mountain bikes, while its engineered features make it suitable for aggressive riding styles and challenging terrain.

Innovative Features & Benefits

- Compatible with 1x11 and 1x12 drivetrains, supporting up to a 45-tooth sprocket for versatile gear ranges

- Shadow RD+ clutch system reduces chain slap, increases chain retention, and reduces drivetrain noise

- Shorter mid-cage design provides better ground clearance and improved clearance for larger tires

- Decreased derailleur tension in low gears ensures smoother, more efficient shifts

- Durable materials and construction withstand harsh trail conditions

Upgrade your mountain bike with confidence, knowing the Shimano XTR RD-M9100-GS Rear Derailleur offers cutting-edge engineering designed for aggressive trail riding, superior reliability, and effortless gear shifting. Whether tackling technical descents or climbing steep ascents, this derailleur helps you perform at your best.

  • Enhanced durability and precise shifting performance for aggressive mountain biking, engineered with high-strength aluminum materials and advanced gear technology.
  • Compatible with 1x12 drivetrain setups up to a 45-tooth sprocket, ensuring versatile gear range for challenging trails and steep ascents.
  • Features Shimano's innovative Shadow RD+ clutch system, significantly reducing chain slap and noise for a quieter, more stable ride in rough terrain.
  • Mid-cage design with a 28mm shorter construction delivers improved ground clearance and maneuverability on technical trail sections.
  • Equipped with a larger 13-tooth pulley for optimized chain management and increased efficiency, delivering smoother shifts and reduced drivetrain wear.
Largest Cog45
ColorGray
Rear Der/Shifter CompatibilityShimano Mountain
Rear Derailleur Mount Type10x1 Standard
Drivetrain Speeds12
Weight237
Chain Wrap Capacity (teeth)35
Cage LengthMedium
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Customer Reviews

Based on 5 reviews
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M
MartinM210

I've always had really good luck and liked the feel of the xtr derailers. My old 11 speed XTR was almost maintenance free for 4 years and felt better than my bikes with sram GX parts. This is no different. I also like the B screw adjustment line. I'm using it with a Sram 10-50t so I had to tune the B screw a bit more inboard than the 51T line suggested but a little experimenting got it dialed in. Shifts great just like my old 11 speed XTR did, nice crisp precise shifting. Very happy with it.;

W
Wilferdo Nuñez

Excelente producto;

L
Luvs coffee

Converted form 10 speed to 12 speed drive train, full shimano components really needed to be used to get best shifting, tried KMC/sram changes but they do not shift as quietly or precisely as the shimano.;

L
Luc Busquin

The shimano 12 speed XTR derailleurs are great but suffer from a very bad flaw.
I’ve been running both SRAM eagle and XTR 12 speed drives. Both great. The shimano shifts and runs slightly more smoothly than the the SRAM. The shimano cassette has a more progressive gear range.
But... there is a major problem with the XTR: the clutch housing is not waterproof. Water can find its way into the clutch from the clutch lever seal and the clutch cover o-ring. Once water gets inside the clutch, it rusts and need to be replaced.
I’d recommend lubing both these seals before Installing an XTR derailleur.;

A
Alex

I managed to Completely snap my original XT derailleur on some logs awhile back on a ride and needed a replacement fast. Unfortunately all I could find that shipped fast was this XTR derailleur. It works great just like the XT but lighter, more expensive, and shinier.;