--- product_id: 148688536 title: "KCNC SXX1 Mountain MTB Bicycle Bike Rear Derailleur Oversized Pulley Wheel System Cage OSPW for Sram Eagle XX1/X01/GX/NX Mechanical 12 Speed use in Black/Gold/Red Pulley Colors" brand: "kcnc" price: "FREE" currency: EUR in_stock: false reviews_count: 1 category: "Outdoors" url: https://www.desertcart.hr/products/148688536-kcnc-sxx1-mountain-mtb-bicycle-bike-rear-derailleur-oversized-pulley store_origin: HR region: Croatia --- # KCNC SXX1 Mountain MTB Bicycle Bike Rear Derailleur Oversized Pulley Wheel System Cage OSPW for Sram Eagle XX1/X01/GX/NX Mechanical 12 Speed use in Black/Gold/Red Pulley Colors **Brand:** kcnc **Price:** FREE **Availability:** ❌ Out of Stock ## Quick Answers - **What is this?** KCNC SXX1 Mountain MTB Bicycle Bike Rear Derailleur Oversized Pulley Wheel System Cage OSPW for Sram Eagle XX1/X01/GX/NX Mechanical 12 Speed use in Black/Gold/Red Pulley Colors by kcnc - **How much does it cost?** FREE with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/148688536-kcnc-sxx1-mountain-mtb-bicycle-bike-rear-derailleur-oversized-pulley) ## Best For - kcnc enthusiasts ## Why This Product - Trusted kcnc brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Full description not available ## Features - WHY USING OVERSIZED PULLEY WHEEL CAGE-Upgrade your drivetrain for ultimate efficiency and superior performance.KCNC Wheel Bearings reduce friction, which gives you a lower rolling resistance.Upgrading your wheel bearings to oversized pulley will maximize the return you get from your energy.KCNC oversized pulley cage reduce friction and increases resistance to contamination and corrosion. - THE EFFICIENCY OF OSPW-The Oversized Pully Wheel(OSPW) system reduces friction in the pulleys by 45 % and for your optimised performance.The overall power savings of the OSPW System for Sram red/force reach 30%-60%, or more in some cases, over a stock setup. - NARROW WIDE PULLEY&DURABLE CHAIN RETENTION-The OSPW for SRAM Eagle Mechanical features a narrow wide tooth profile to ensure durable chain retention.The system consists of Top 14t & Bottom 16t alloy pulley wheels fitted with low friction bearings and a lightweight cage made from 7075 Alloy.Coated bearings prolong the lifetime even further.The oversized pulley wheels have 3-5 times longer lifetime than the commonly used standard pulleys on the market. - COMPATIBILITY-The OSPW system is compatible with Sram Eagle XX1/X01/GX/NX Mechanical 12 speed rear derailleur.The Oversized Pulley Wheels System has been proven to be the fastest pulley system in the world, providing energy savings starting from 2.4 watts.Almost have the same efficiency ratio with Ceramicspeed. - SPECIFICATION-Top Pully :14T with sealed bearing / Bottom Pully :16T with sealed bearing / Matiral : AL7075 Fully CNC/ Color:Black,Red,Gold available / Weight : approx.71grams / For Sram Eagle XX1/X01/GX/NX Mechanical 12 speed rear derailleur use. ## Images ![KCNC SXX1 Mountain MTB Bicycle Bike Rear Derailleur Oversized Pulley Wheel System Cage OSPW for Sram Eagle XX1/X01/GX/NX Mechanical 12 Speed use in Black/Gold/Red Pulley Colors - Image 1](https://m.media-amazon.com/images/I/41hMLQaA88L.jpg) ![KCNC SXX1 Mountain MTB Bicycle Bike Rear Derailleur Oversized Pulley Wheel System Cage OSPW for Sram Eagle XX1/X01/GX/NX Mechanical 12 Speed use in Black/Gold/Red Pulley Colors - Image 2](https://m.media-amazon.com/images/I/615oiBf4FIL.jpg) ![KCNC SXX1 Mountain MTB Bicycle Bike Rear Derailleur Oversized Pulley Wheel System Cage OSPW for Sram Eagle XX1/X01/GX/NX Mechanical 12 Speed use in Black/Gold/Red Pulley Colors - Image 3](https://m.media-amazon.com/images/I/41WB7+mgNvL.jpg) ![KCNC SXX1 Mountain MTB Bicycle Bike Rear Derailleur Oversized Pulley Wheel System Cage OSPW for Sram Eagle XX1/X01/GX/NX Mechanical 12 Speed use in Black/Gold/Red Pulley Colors - Image 4](https://m.media-amazon.com/images/I/41CcJpphraL.jpg) ![KCNC SXX1 Mountain MTB Bicycle Bike Rear Derailleur Oversized Pulley Wheel System Cage OSPW for Sram Eagle XX1/X01/GX/NX Mechanical 12 Speed use in Black/Gold/Red Pulley Colors - Image 5](https://m.media-amazon.com/images/I/412QHM4zgTL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐ WORKS FOR SRAM X01 AXS! *by M***A on Reviewed in the United States on March 4, 2020* I rarely write reviews, but I wanted to give this company a shout out for making this product.As of March of 2020, Sram does NOT sell a lower cage for their AXS X01 rear mech. In fact, they do not sell parts for the AXS X01 mech and they have NO crash replacement kind of program. If you bend your AXS X01 lower cage like I did, Sram will NOT help you out in any way. Their recommendation? Sorry, but you have to shell out for another complete mech.I'm so glad KCNC makes this lower cage because it saved me from buying a whole new derailleur. Now Sram does recommend against using any 3rd party cages and they also kind of threatened that my warranty would be voided, but guess what? There is no warranty for this if you crash it anyway; so might as well do everything you can to get back riding again.Only reason I gave it 4 stars instead of 5 is because there is a bolt included with this cage that does not fit with the rest of the AXS mech. The bolt that is on the AXS mech will not work with this cage. So my LBS mechanic had to grind the KCNC's bolt to make it work. I'm not sure what exactly he did, but it does work in all gears and it doesn't sound any louder than it used to be or anything like that. So I'm a happy customer. --- ## 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.hr/products/148688536-kcnc-sxx1-mountain-mtb-bicycle-bike-rear-derailleur-oversized-pulley](https://www.desertcart.hr/products/148688536-kcnc-sxx1-mountain-mtb-bicycle-bike-rear-derailleur-oversized-pulley) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-07-17*