--- product_id: 302547511 title: "MTB Gx Type 2.1 Long Cage Rear Derailleur - Black, 10-Speed" brand: "sram" price: "ΰΈΏ8615" currency: THB in_stock: true url: https://www.desertcart.co.th/products/302547511-mtb-gx-type-2-1-long-cage-rear-derailleur-black store_origin: TH region: Thailand --- # Optimized 10-speed drivetrain compatibility Exact Actuation tech for pinpoint shifts 36-tooth cassette cage for rugged terrain MTB Gx Type 2.1 Long Cage Rear Derailleur - Black, 10-Speed **Brand:** sram **Price:** ΰΈΏ8615 **Availability:** βœ… In Stock ## Summary > πŸš΅β€β™€οΈ Shift into the future of trail dominance with SRAM GX Type 2.1! ## Quick Answers - **What is this?** MTB Gx Type 2.1 Long Cage Rear Derailleur - Black, 10-Speed by sram - **How much does it cost?** ΰΈΏ8615 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/302547511-mtb-gx-type-2-1-long-cage-rear-derailleur-black) ## Best For - sram enthusiasts ## Why This Product - Trusted sram brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Trail-Ready Design:** Built for unisex riders and all-season cycling, this derailleur is your go-to upgrade for dependable mountain biking. - β€’ **10-Speed Powerhouse:** Seamlessly conquer trails with a drivetrain optimized for 10-speed performance, ensuring smooth transitions every ride. - β€’ **Long Cage Versatility:** Designed to handle a 36-tooth cassette, this long cage derailleur adapts effortlessly to diverse mountain terrains. - β€’ **Lightweight Durability:** Crafted from premium aluminum, it balances featherlight weight (0.4 kg) with rugged endurance for all your adventures. - β€’ **Precision Shifting Mastery:** Experience flawless gear changes with SRAM’s Exact Actuation technology, engineered for millisecond accuracy. ## Overview The SRAM MTB GX Type 2.1 Long Cage Rear Derailleur is a precision-engineered 10-speed component featuring Exact Actuation technology for reliable, crisp shifting. Its long cage design supports up to a 36-tooth cassette, making it ideal for aggressive mountain biking. Constructed from lightweight aluminum, it offers durability without added weight, perfect for all-season, unisex use. ## Description Sram MTB Gx Type 2.1 Long Cage Rear Derailleur - Black, 10-Speed ## Features - Exact Actuation technology - Precise and dependable 10-speed performance focused chassis design - 36-Tooth cassette capable cage - Model number: 007518080000 ## Technical Specifications | Specification | Value | |---------------|-------| | Product dimensions | 17.3L x 16.6W x 8.1H centimeters | | Manufacturer | Sram MTB | | UPC | 757183591480 710845771835 784427964175 | | Global Trade Identification Number | 00710845771835 | | Bike Type | mountain | | Color | Black | | Size | 10 Speed | | Style | Long | | Weight | 0.4 Kilograms | | Material Type | Aluminum | | Number of Items | 1 | | Number of Pieces | 1 | | Season | continuity 2015 | | Usage | cycling | | Sport | Cycling | | Batteries Included? | No | | Department | Unisex | | Item model number | 00.7518.080.000 | | ASIN | B00V8RZ9SW | ## Product Details - **Brand:** Sram - **Colour:** Black - **Material:** Aluminum - **Item weight:** 157 Grams - **Mounting type:** Braze-On Mount ## Images ![MTB Gx Type 2.1 Long Cage Rear Derailleur - Black, 10-Speed - Image 1](https://m.media-amazon.com/images/I/617d3tl81RL.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: What size should I use for a 36 -11 casette?** A: Forgive me, but you are asking the wrong question.The cage size is controlled by the maximum amount of slack chain created by the combination of chain rings AND cassette. This is called "Chain Wrap".To formula for chain wrap is (Big Chain Ring - Small Chain Ring) + (Big cassette Cog - Small Cassette Cog). So if you are using a compact double chain ring (50-34) and a 11-36 cassette the numbers work out to (50 minus 34) + (36 minus 11) or 16 + 25 = 41. This means that if you shift from a big-big combination to a small-small combination, your derailleur has to be able to handle 41 teeth of loose chain, which calls for a long cage. On my bike a have a single 40 tooth chain ring and a 11-42 cassette so the chain wrap works out to (40 - 40) + (42 - 11) = 0 + 31 = 31. So even though I have a huge cassette I only need a medium cage because I have no front derailleur to create more chain wrap.Hope that helps. **Q: what is short, medium.long cage?** A: It has to do with chain wrap capacity. Small=30t Chainwrap Capacity, Medium=35t, Long=47t. The wrap is just the difference between the number of chain ring teeth plus the difference between the cog teeth. For example a 53/39 with a 12-25 cassette requires 14 + 13 = 27 teeth of wrap capacity needed from the RD. **Q: Will this work with Shimano Ultegra shifter** A: No, actuation will only work with sram.... The good news is that it will work with both sram 10 speed road and Mtb... Unlike the newer 11 speeds witch are road or mtb specific. **Q: Can this be used with a shimano 11/42 cassette ?** A: I used it with a sunrace 11-42 cassette but I needed a longer b tension screw(which was not provided) so you will likely run into the same issue. ## Frequently Bought Together - Sram MTB Gx Type 2.1 Long Cage Rear Derailleur - Black, 10-Speed - SRAM GX Trigger Shifter 10-Speed Rear Black - SRAM PC-1051 10 Speed Chain w/PowerLock 114 Links --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.th/products/302547511-mtb-gx-type-2-1-long-cage-rear-derailleur-black](https://www.desertcart.co.th/products/302547511-mtb-gx-type-2-1-long-cage-rear-derailleur-black) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-04-24*