--- product_id: 355471731 title: "Shimano XTR RD-M9100-GS Rear Bicycle Derailleur - 12 Speed" brand: "shimano" price: "VT178146" currency: VUV in_stock: true reviews_count: 3 category: "Shimano" url: https://www.desertcart.vu/products/355471731-shimano-xtr-rd-m9100-gs-rear-bicycle-derailleur-12-speed store_origin: VU region: Vanuatu --- # 13T oversized pulleys for efficiency 12-speed precision shifting Sealed bearing pulleys for durability Shimano XTR RD-M9100-GS Rear Bicycle Derailleur - 12 Speed **Brand:** shimano **Price:** VT178146 **Availability:** ✅ In Stock ## Summary > 🚵‍♂️ Shift into the future of trail dominance with Shimano XTR M9100! ## Quick Answers - **What is this?** Shimano XTR RD-M9100-GS Rear Bicycle Derailleur - 12 Speed by shimano - **How much does it cost?** VT178146 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/355471731-shimano-xtr-rd-m9100-gs-rear-bicycle-derailleur-12-speed) ## Best For - shimano enthusiasts ## Why This Product - Trusted shimano brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Sealed bearing tension and guide pulleys ensure long-lasting, maintenance-free performance. - • **Quiet Ride Technology:** Innovative low-tension design and bumper cage minimize noise and vibration. - • **Optimized for Adventure:** Lightweight yet robust GS medium cage perfectly balances durability and agility. - • **Enhanced Chain Management:** Larger 13-tooth pulleys reduce friction and boost drivetrain efficiency. - • **Effortless 12-Speed Shifting:** Experience seamless gear transitions designed for rocky, technical trails. ## Overview The Shimano XTR RD-M9100-GS Rear Derailleur is a premium 12-speed drivetrain component engineered for serious mountain bikers. Featuring oversized 13T sealed bearing pulleys and a low-tension design, it delivers ultra-quiet, efficient shifting on the most technical terrain. Crafted from lightweight, durable materials, this GS medium cage derailleur offers unmatched precision and reliability for rocky trail adventures. ## Description With the release of the XTR M9100 12-speed drivetrain, Shimano jumps right back to the front of the pack by expanding the available gear range and offering better shifting performance than ever before. The new XTR RD-M9100 Rear Derailleur is specifically optimized for Shimano's new wide range cassettes, and features several updates that ultimately lead to smoother and quieter drivetrain operation. It comes in two different cage lengths depending on what gear ratio you choose, letting you select the best option to suit your riding style and preferences. The M9100 Rear Derailleur sees improved chain stability and reduced friction thanks to larger 13t pulley wheels, making it better able to withstand full-force pedaling while shifting gears as smoothly as ever. Shimano was also able to decrease the rear derailleur tension in the lower gear positions, preventing the high chain tension that causes excess friction and noise, and thus a loss of efficiency. The Shadow RD+ clutch system provides excellent chain retention in rough terrain, and keeps annoying chain slap to a minimum. Lastly, the addition of a protective bumper to the inside of the derailleur cage quiets operation even further by cushioning the sound of any chain rub. There are two options available depending on your desired setup. The longer cage SGS model is required for the 10 - 51 tooth XTR 12-speed cassette, but also works with the 10 - 45t Rhythm-Step 12-speed cassette. The GS model features a shorter cage with 28mm more ground clearance for rocky, rooty, and aggressive terrain. It's designed exclusively for the 12-speed 10 - 45t Rhythm-Step cassette. Review: Great Derailer and good value. Shimano XTR 12 speed is by far the best and lightest drivetrain. Review: Usar una transmisión XTR da la seguridad de que no habrá fallos de funcionamiento en condiciones extremas,lodo,agua,polvo ,todo es nada ante XTR..... ## Features - Material: aluminum - Capacity: 35T - Cassette Range: [SGS] 10-51T, [GS] 10-45T - Gearing: 1x12 - Compatibility: [chain] XTR CN-M9100, [cassette] XTR CS-M9100, [shifter] XTR SL-M9100-R, XTR SL-M9100-IR ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07SPGRZR3 | | Best Sellers Rank | #156,637 in Sporting Goods ( See Top 100 in Sporting Goods ) #122 in Bike Rear Dérailleurs | | Brand Name | SHIMANO | | Case Material Type | Aluminum | | Color | Stealth Gray | | Customer Reviews | 4.9 4.9 out of 5 stars (10) | | Global Trade Identification Number | 00689228880245 | | Included Components | Rear Derailleur | | Item Dimensions L x W x H | 15.2L x 10.2W x 5.1H centimeters | | Item Weight | 408 g | | Manufacturer | SHIMANO | | Manufacturer Part Number | IRDM9100GS | | Material Type | Aluminum or Carbon Fiber or Stainless Steel | | Model Number | Shimano | | Mount Type | Braze-On Mount | | Number of Teeth | 45 | | UPC | 689228880245 | ## Product Details - **Brand:** SHIMANO - **Colour:** Stealth Gray - **Item weight:** 408 g - **Material:** Aluminum or Carbon Fiber or Stainless Steel - **Mounting type:** Braze-On Mount ## Images ![Shimano XTR RD-M9100-GS Rear Bicycle Derailleur - 12 Speed - Image 1](https://m.media-amazon.com/images/I/712xAKIfMeL.jpg) ![Shimano XTR RD-M9100-GS Rear Bicycle Derailleur - 12 Speed - Image 2](https://m.media-amazon.com/images/I/613W-oM8wPL.jpg) ![Shimano XTR RD-M9100-GS Rear Bicycle Derailleur - 12 Speed - Image 3](https://m.media-amazon.com/images/I/614lkXB4pXL.jpg) ![Shimano XTR RD-M9100-GS Rear Bicycle Derailleur - 12 Speed - Image 4](https://m.media-amazon.com/images/I/61VqjP8X1iL.jpg) ![Shimano XTR RD-M9100-GS Rear Bicycle Derailleur - 12 Speed - Image 5](https://m.media-amazon.com/images/I/61GL5VOx5VS.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by T***1 on 16 May 2025* Great Derailer and good value. Shimano XTR 12 speed is by far the best and lightest drivetrain. ### ⭐⭐⭐⭐⭐ Review *by J***O on 4 January 2025* Usar una transmisión XTR da la seguridad de que no habrá fallos de funcionamiento en condiciones extremas,lodo,agua,polvo ,todo es nada ante XTR..... ### ⭐⭐⭐⭐⭐ Review *by W***Z on 16 January 2021* Excelente producto ## Frequently Bought Together - SHIMANO XTR Rd-M9100 Rear Derailleur - SHIMANO XTR Sl-M9100 Trigger Shifters - SHIMANO Xt Cs-M8100 12-Speed Cassette --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vu/products/355471731-shimano-xtr-rd-m9100-gs-rear-bicycle-derailleur-12-speed](https://www.desertcart.vu/products/355471731-shimano-xtr-rd-m9100-gs-rear-bicycle-derailleur-12-speed) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-03*