{"product_id":"vortex-racing-v4-45-tooth-525-rear-sprocket-black-1","title":"Vortex Racing V4 45 Tooth 525 Rear Sprocket - Black","description":"The next generation of Vortex aluminum rear sprockets, V4 builds on the long-running CAT5 sprocket platform with a lighter, more aggressive design. Reduced rotating mass improves acceleration, throttle response, handling, and overallagility. Ideal for street, track, and performance applications.\n\u003cul\u003e\n  \u003cli\u003eExcellent concentricity for smooth, quiet operation and efficient power transfer\u003c\/li\u003e\n  \u003cli\u003ePrecision-machined from high-strength 7075-T6 aluminum\u003c\/li\u003e\n  \u003cli\u003e10-15% Lighter than CAT5\u003c\/li\u003e\n  \u003cli\u003eManufactured in the USA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUpgrade your Yamaha motorcycle with the Vortex Racing V4 45-tooth 525 rear sprocket, part number vtx642CZKV4-45. Developed as the next generation of the proven Vortex CAT5 platform, the V4 features a lighter, more aggressive profile designed to reduce rotating mass. This reduction can improve acceleration, throttle response, handling, and overall agility for street riding, track use, and other performance applications. The black finish adds a clean, performance-focused appearance to your drivetrain.\u003cbr\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cbr\u003e  \u003cli\u003eExcellent concentricity supports smooth, quiet operation and efficient power transfer\u003c\/li\u003e\n\u003cbr\u003e  \u003cli\u003ePrecision-machined from high-strength 7075-T6 aluminum for a strong, lightweight design\u003c\/li\u003e\n\u003cbr\u003e  \u003cli\u003e10-15% lighter than the Vortex CAT5 sprocket platform\u003c\/li\u003e\n\u003cbr\u003e  \u003cli\u003e45-tooth configuration with 525 chain compatibility\u003c\/li\u003e\n\u003cbr\u003e  \u003cli\u003eManufactured in the USA\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003eDesigned for reliable performance and responsive power delivery, the Vortex Racing V4 rear sprocket is a practical choice for riders seeking optimized drivetrain performance without unnecessary weight. Its precision construction helps promote consistent chain engagement, while the durable aluminum design is suited to the demands of both spirited street riding and competition-oriented use. Verify chain size, gearing requirements, and motorcycle fitment before installation.\u003cbr\u003eThis Vortex Racing rear sprocket fits select Yamaha models, including the 2021-2024 MT-09, 2021-2024 MT-09 SP, and 2022-2024 XSR900. The 45-tooth gearing can be used to tailor final-drive characteristics to your riding preferences, with exact results depending on the motorcycle, front sprocket, chain, and setup. Professional installation is recommended to help ensure correct alignment, torque, and chain adjustment.\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eBrand: Vortex Racing\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003ePart Number: vtx642CZKV4-45\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eSprocket Series: V4\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eTooth Count: 45 teeth\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eChain Compatibility: 525 chain\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMaterial: Precision-machined 7075-T6 aluminum\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eWeight Reduction: 10-15% lighter than CAT5\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eOperation: Excellent concentricity for smooth, quiet operation and efficient power transfer\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eManufacturing Origin: Made in the USA\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eFinish: Black\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eFitment: 2021-2024 Yamaha MT-09, 2021-2024 Yamaha MT-09 SP, and 2022-2024 Yamaha XSR900\u003c\/li\u003e\u003c\/ul\u003e\u003cbr\u003e\nFitment:\u003cbr\u003e\nYamaha MT-09 Base 2018\u003cbr\u003e\nYamaha MT-09 Base 2021\u003cbr\u003e\nYamaha MT-09 Base 2022\u003cbr\u003e\nYamaha MT-09 Base 2023\u003cbr\u003e\nYamaha MT-09 Base 2024\u003cbr\u003e\nYamaha MT-09 Base 2025\u003cbr\u003e\nYamaha MT-09 Base 2026\u003cbr\u003e\nYamaha MT-09 SP Base 2021\u003cbr\u003e\nYamaha MT-09 SP Base 2022\u003cbr\u003e\nYamaha MT-09 SP Base 2023\u003cbr\u003e\nYamaha MT-09 SP Base 2024\u003cbr\u003e\nYamaha MT-09 SP Base 2025\u003cbr\u003e\nYamaha MT-09 SP Base 2026\u003cbr\u003e\nYamaha XSR900 Base 2016\u003cbr\u003e\nYamaha XSR900 Base 2017\u003cbr\u003e\nYamaha XSR900 Base 2018\u003cbr\u003e\nYamaha XSR900 Base 2022\u003cbr\u003e\nYamaha XSR900 Base 2023\u003cbr\u003e\nYamaha XSR900 Base 2024\u003cbr\u003e\nYamaha XSR900 Base 2025\u003cbr\u003e\nYamaha XSR900 Base 2026","brand":"Vortex Racing","offers":[{"title":"Default Title","offer_id":67598402879804,"sku":"vtx642CZKV4-45","price":98.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1865\/9007\/files\/7d08cc7e82f75e98c8dd04025f3b4eceL_b53ead1d-9ff3-46a8-8015-013651bb432a.jpg?v=1790647219","url":"https:\/\/necycleshop.com\/products\/vortex-racing-v4-45-tooth-525-rear-sprocket-black-1","provider":"NE Cycle Shop","version":"1.0","type":"link"}