--- product_id: 172395127 title: "Sprocket 7-Speed MF-TZ500 Screw Ring 7 Speed Sprocket Bicycle Freewheel." price: "37978CFA" currency: XOF in_stock: true reviews_count: 13 url: https://www.desertcart.sn/products/172395127-sprocket-7-speed-mf-tz500-screw-ring-7-speed-sprocket store_origin: SN region: Senegal --- # Screw ring secure fit 7-speed precision gearing 14-28 tooth mega gear ratio Sprocket 7-Speed MF-TZ500 Screw Ring 7 Speed Sprocket Bicycle Freewheel. **Price:** 37978CFA **Availability:** ✅ In Stock ## Summary > ⚙️ Shift your ride into the fast lane with Shimano precision! ## Quick Answers - **What is this?** Sprocket 7-Speed MF-TZ500 Screw Ring 7 Speed Sprocket Bicycle Freewheel. - **How much does it cost?** 37978CFA with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/172395127-sprocket-7-speed-mf-tz500-screw-ring-7-speed-sprocket) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Lightweight & Compact:** At just 0.5 kg, it adds power without weighing you down. - • **Trusted Shimano Quality:** Backed by a 4.7-star rating and durable construction for long-lasting performance. - • **Robust Screw Ring Design:** Ensures a secure, easy-to-install fit that stays locked in place. - • **Seamless 7-Speed Shifting:** Experience smooth, reliable gear transitions for every ride. - • **Optimized 14-28 Tooth Range:** Perfect gear spread for tackling urban commutes and weekend adventures alike. ## Overview The Shimano Sprocket 7-Speed MF-TZ500 Screw Ring is a high-performance bicycle freewheel featuring a versatile 14-28 tooth gear range. Designed for smooth shifting and secure installation, this lightweight sprocket is trusted by cyclists worldwide for durability and reliability, making it the go-to upgrade for any 7-speed bike. ## Description MF-TZ500 7-speed multiple freewheel, 14-28 tooth Review: HIGH QUALITY - OE Shimano. Over 100 miles works great. Review: Great replacement, easier to install than I expected. - This saved my bike. I thought I would have to buy a whole wheel, or rim, to replace my broken sprocket. I stumbled across a video one day of someone who ordered this replacement, and showed how easy it was to replace, so I figured I would give it a shot. I was pleasantly surprised how easy it was to do the work myself. It fit perfectly, and was an exact replacement for my original, just matching the photos on the listing. It was much faster to swap out the broken part than I expected. Once installed, the bike shifted and operated like original. ## Features - 100 cm - Ideal Product - The SHIMANO Tourney TZ 7-speed freewheel sprocket offers a mega gear ratio of 14-28Z - Long-lasting product ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B073XTMQQV | | Best Sellers Rank | #14,829 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #1 in Bike Cassettes & Freewheels | | Brand Name | SHIMANO | | Color | Standard | | Customer Reviews | 4.7 4.7 out of 5 stars (1,803) | | Date First Available | April 24, 2017 | | Included Components | Bike Parts | | Item Dimensions LxWxH | 7.87 x 7.87 x 2.36 inches | | Item Package Dimensions L x W x H | 13.7 x 9.57 x 1.65 inches | | Item Weight | 0.5 Kilograms | | Manufacturer | Shimano Tourney / TY | | Material | Other | | Model Name | Mftz5007428 | | Model Year | 2018 | | Number of Items | 1 | | Outer Material | For | | Package Weight | 0.51 Kilograms | | Part Number | MFTZ5007428_Gris - (GRIS) | | Size | 14 - 28 teeth | | Sport Type | Cycling | | Style | Shimano | | Suggested Users | unisex | ## Product Details - **Brand:** SHIMANO - **Color:** Standard - **Material:** other - **Frame Type:** Full Rim - **Special Feature:** Verstellbar ## Images ![Sprocket 7-Speed MF-TZ500 Screw Ring 7 Speed Sprocket Bicycle Freewheel. - Image 1](https://m.media-amazon.com/images/I/618-gpoPM3L.jpg) ![Sprocket 7-Speed MF-TZ500 Screw Ring 7 Speed Sprocket Bicycle Freewheel. - Image 2](https://m.media-amazon.com/images/I/61JZqTCsP3L.jpg) ![Sprocket 7-Speed MF-TZ500 Screw Ring 7 Speed Sprocket Bicycle Freewheel. - Image 3](https://m.media-amazon.com/images/I/51e6tHYaK3L.jpg) ![Sprocket 7-Speed MF-TZ500 Screw Ring 7 Speed Sprocket Bicycle Freewheel. - Image 4](https://m.media-amazon.com/images/I/61e2GBEErSL.jpg) ## Available Options This product comes in different **Item Shape** options. ## Questions & Answers **Q: Can you tell me the width in millimeters of the 7-speed 14-28 freewheel? I need to determine if it will fit my current 6 speed bike and axel** A: The width from bearing side to side is 350 mm, which equates to 1 and 3/8 inch. the inner side does have threads on the inside of it. Some come without threads **Q: Will it work on my 12-speed Schwinn Ranger?** A: No! This is a 7 speed freewheel. Don't think it's interchangable with a 12 speed. You would need different derailer, different shifter, probably spacers, etc. **Q: What is the total width of this freewheel?** A: Maybe just a touch over 1 1/4" **Q: Ordered this product and never received the part. Contacted the company and received a message saying that I’m not eligible for a refund?** A: You can make a dispute with the company that released your payment and ask for a refund, paypal and cc will get your money back if you forward a dispute ## Customer Reviews ### ⭐⭐⭐⭐⭐ HIGH QUALITY *by R***A on March 20, 2026* OE Shimano. Over 100 miles works great. ### ⭐⭐⭐⭐⭐ Great replacement, easier to install than I expected. *by A***R on May 5, 2026* This saved my bike. I thought I would have to buy a whole wheel, or rim, to replace my broken sprocket. I stumbled across a video one day of someone who ordered this replacement, and showed how easy it was to replace, so I figured I would give it a shot. I was pleasantly surprised how easy it was to do the work myself. It fit perfectly, and was an exact replacement for my original, just matching the photos on the listing. It was much faster to swap out the broken part than I expected. Once installed, the bike shifted and operated like original. ### ⭐⭐⭐⭐⭐ Good purchase. Solid part *by B***T on May 17, 2026* Lots of biking and doing well. No issues. ## Frequently Bought Together - SHIMANO Sprocket 7-Speed MF-TZ500 Screw Ring 7 Speed Sprocket Bicycle Freewheel. - PARK TOOL FR-1.3 Freewheel Remover Shimano Uniglide Tool,Black - Quacc Bicycle Freewheel Remover Freewheel Removal Tool Compatible with Shimano Sunrace Sram Dnp --- ## 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.sn/products/172395127-sprocket-7-speed-mf-tz500-screw-ring-7-speed-sprocket](https://www.desertcart.sn/products/172395127-sprocket-7-speed-mf-tz500-screw-ring-7-speed-sprocket) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-06-01*