{"product_id":"vortex-racing-v4-45-tooth-520-rear-sprocket-black-3","title":"Vortex Racing V4 45 Tooth 520 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 motorcycle’s final-drive performance with the Vortex Racing V4 45-tooth 520 rear sprocket, part number vtx839AZKV4-45. Designed as the next generation of Vortex aluminum rear sprockets, the V4 builds on the proven CAT5 platform with a lighter, more aggressive profile. Reduced rotating mass can help improve acceleration, throttle response, handling, and overall agility for street riding, track use, and other performance applications.\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 dependable performance\u003c\/li\u003e\n\u003cbr\u003e  \u003cli\u003eApproximately 10–15% lighter than the Vortex CAT5 sprocket design\u003c\/li\u003e\n\u003cbr\u003e  \u003cli\u003e45-tooth configuration for 520 chain applications\u003c\/li\u003e\n\u003cbr\u003e  \u003cli\u003eBlack finish provides a clean, performance-oriented appearance\u003c\/li\u003e\n\u003cbr\u003e  \u003cli\u003eManufactured in the USA\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003eThe Vortex Racing V4 sprocket is engineered for riders who want responsive drivetrain performance without unnecessary rotating weight. Its precision construction helps maintain consistent chain engagement and dependable power delivery, while the 7075-T6 aluminum material provides a strong, lightweight foundation for demanding riding conditions. Whether installed on a street motorcycle, track bike, or performance-focused build, this rear sprocket delivers a practical balance of reduced weight, durable construction, and precise fitment. Verify your motorcycle’s required chain size, tooth count, bolt pattern, and carrier compatibility before installation.\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: vtx839AZKV4-45\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eProduct Type: V4 aluminum rear sprocket\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eTooth Count: 45 teeth\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eChain Size: 520\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: Approximately 10–15% lighter than CAT5\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eFinish: Black\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003ePerformance: Reduced rotating mass for improved acceleration, throttle response, handling, and agility\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eManufacturing: Made in the USA\u003c\/li\u003e\u003c\/ul\u003e","brand":"Vortex Racing","offers":[{"title":"Default Title","offer_id":67598426898748,"sku":"vtx839AZKV4-45","price":92.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1865\/9007\/files\/7d08cc7e82f75e98c8dd04025f3b4eceL_0d6238b7-3648-4cc9-ae0d-d5737c8c0f69.jpg?v=1790648464","url":"https:\/\/necycleshop.com\/products\/vortex-racing-v4-45-tooth-520-rear-sprocket-black-3","provider":"NE Cycle Shop","version":"1.0","type":"link"}