--- product_id: 593232920 title: "Upgraded 25H Chain 13T Teeth Motor Sprocket Master Link Replacement for Razor MX500 MX650 SX500 Mcgrath RSF650 Dirt Rocket Bike MY1020 Motor Kids Electric Scooter Mini Bike Go Kart Cart Parts" brand: "kamier" price: "฿2609" currency: THB in_stock: true reviews_count: 5 category: "Kamier" url: https://www.desertcart.co.th/products/593232920-upgraded-25h-chain-13t-teeth-motor-sprocket-master-link-replacement store_origin: TH region: Thailand --- # 29mm outer diameter 13T precision teeth 25H chain compatible Upgraded 25H Chain 13T Teeth Motor Sprocket Master Link Replacement for Razor MX500 MX650 SX500 Mcgrath RSF650 Dirt Rocket Bike MY1020 Motor Kids Electric Scooter Mini Bike Go Kart Cart Parts **Brand:** kamier **Price:** ฿2609 **Availability:** ✅ In Stock ## Summary > ⚡ Upgrade your ride, outrun the pack! ## Quick Answers - **What is this?** Upgraded 25H Chain 13T Teeth Motor Sprocket Master Link Replacement for Razor MX500 MX650 SX500 Mcgrath RSF650 Dirt Rocket Bike MY1020 Motor Kids Electric Scooter Mini Bike Go Kart Cart Parts by kamier - **How much does it cost?** ฿2609 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/593232920-upgraded-25h-chain-13t-teeth-motor-sprocket-master-link-replacement) ## Best For - kamier enthusiasts ## Why This Product - Trusted kamier brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Boost Your Ride Speed:** Proven to add up to 4 mph on electric dirt bikes—feel the thrill of the upgrade. - • **Compact 29mm Diameter:** Space-saving design ensures easy installation on MY1020 DC motors and more. - • **Precision 13T Teeth Design:** Optimized for smooth power transfer and enhanced speed gains. - • **Durable Master Link Set Included:** Comes with 5 master links for quick, reliable chain assembly and maintenance. - • **Universal 25H Chain Compatibility:** Seamlessly fits popular Razor MX and Dirt Rocket models without modifications. ## Overview The KAMIER Upgraded 25H Chain 13T Motor Sprocket is a precision-engineered replacement part designed for Razor MX500, MX650, SX500, RSF650, and similar electric dirt bikes and scooters. Featuring a 13-tooth sprocket with a 29mm outer diameter and compatibility with 25H chains, it includes 5 master links for easy installation. This lightweight, durable sprocket enhances motor efficiency and can boost your bike’s speed by up to 4 mph, making it a must-have upgrade for young riders and enthusiasts seeking performance gains. ## Description Fit for MY1020 DC Motor Razor Kids Electric Off Road Motorcross Dirt Rocket Bike Scooter Mini Bike Go Kart Cart Parts Compatible with : / Razor MX650 Dirt Rocket Bike/ Razor MX500 Dirt Rocket Bike/ Razor SX500 Mcgrath Dirt Rocket Bike/Razor RSF650 Street Bike/36V Motor Pocket Mod Bellezza Scooter/ Review: This was used to get more speed out of a 2000w mx350 conversion. It worked well and gave maybe 4 more mph. Review: Fits Razor mx650 without any modifications and added at least 2mph ## Features - Fit for MY1020 DC Motor Razor Kids Electric Off Road Motorcross Dirt Rocket Bike Scooter Mini Bike Go Kart Cart Parts Compatible with : / Razor MX650 Dirt Rocket Bike/ Razor MX500 Dirt Rocket Bike/ Razor SX500 Mcgrath Dirt Rocket Bike/Razor RSF650 Street Bike/36V Motor Pocket Mod Bellezza Scooter/ - Notice: It fit for 25H Chain, not T8F Chain. - Motor Spocket Size：25H Chain, Teeth : 13T, Outer diameter ：29mm (1.14 inch), Mounting Diameter Length : 10mm (0.4 inch), Mounting Diameter Width : 8.5mm (0.34 inch), Tooth Thickness: 4mm (0.16 inch). - Package Including : 1 x 25H Chain 13T Motor Sprocket, 5 x 25H Master Links. - Please check the description to confirm the compatibility before purchase ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CKFHMF86 | | Are batteries included? | No | | Brand | KAMIER | | Country of Origin | USA | | Customer Reviews | 4.4 4.4 out of 5 stars (79) | | Date First Available | 8 October 2023 | | Item Weight | 18 g | | Item model number | KA-CS-02 | | Manufacturer | KAMIER | | Model number | KA-CS-02 | | Number of Memory Sticks | 1 | | Package Dimensions | 8.71 x 5.99 x 0.79 cm; 18 g | ## Images ![Upgraded 25H Chain 13T Teeth Motor Sprocket Master Link Replacement for Razor MX500 MX650 SX500 Mcgrath RSF650 Dirt Rocket Bike MY1020 Motor Kids Electric Scooter Mini Bike Go Kart Cart Parts - Image 1](https://m.media-amazon.com/images/I/71CwMSSlKsL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by M***C on 28 December 2025* This was used to get more speed out of a 2000w mx350 conversion. It worked well and gave maybe 4 more mph. ### ⭐⭐⭐⭐⭐ Review *by V***B on 6 June 2025* Fits Razor mx650 without any modifications and added at least 2mph ### ⭐⭐⭐⭐ Review *by K***W on 5 June 2025* for my razor mx350. it fit but it took me a lil to put on ## Frequently Bought Together - KAMIER Upgraded 25H Chain 13T Teeth Motor Sprocket Master Link Replacement for Razor MX500 MX650 SX500 Mcgrath Dirt Rocket Bike RSF650 MY1020 Motor Kids Electric Scooter Mini Bike Go Kart Cart Parts - KAMIER #25 Roller Chain 132 Link with Drive Chain Breaker for Razor MX500 MX650 SX500 Mcgrath Dirt Rocket Bike Off Road Motocross Pit Bike Kids Electric Scooter Moped Mini Pocket Bike Heavy Duty Parts - GREHUA 25H Chain 132 Link Drive Chain & Chain Tensioner Compatible with Razor MX500 MX650 SX500 Dirt Rocket Electric Motocross RSF650 Mini Sport Street Bike Motorcycle Heavy Duty Mx650 Upgrade Kit --- ## 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.co.th/products/593232920-upgraded-25h-chain-13t-teeth-motor-sprocket-master-link-replacement](https://www.desertcart.co.th/products/593232920-upgraded-25h-chain-13t-teeth-motor-sprocket-master-link-replacement) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-04-22*