{"product_id":"vortex-racing-v4-45-tooth-520-rear-sprocket-black-6","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 with the Vortex Racing V4 45-tooth 520 rear sprocket, part number vtx144AZKV4-45. 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 a strong, lightweight design\u003c\/li\u003e\n\u003cbr\u003e  \u003cli\u003eApproximately 10–15% lighter than the previous CAT5 sprocket platform\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 45-tooth configuration is designed for motorcycles using a 520 chain and should be selected to match your motorcycle’s drivetrain requirements, chain size, and desired gearing. A larger rear sprocket generally increases acceleration and low-speed response while reducing top speed potential, making this sprocket a practical option for riders tuning gearing for track performance, technical roads, or responsive street operation. Always verify fitment and gearing compatibility before installation.\u003cbr\u003eBuilt for riders who demand dependable power transfer without unnecessary rotating weight, the Vortex Racing V4 rear sprocket combines precise manufacturing, durable aluminum construction, and a race-inspired design. Install with the correct hardware and torque specifications, and inspect the chain and sprocket system regularly to help maintain smooth operation and long service life.\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003e45-tooth rear sprocket for 520 chain applications\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003ePrecision-machined 7075-T6 aluminum construction\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eApproximately 10–15% lighter than the Vortex CAT5 platform\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eExcellent concentricity for smooth, quiet operation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eEfficient power transfer and reduced rotating mass\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBlack finish\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eManufactured in the USA\u003c\/li\u003e\u003c\/ul\u003e","brand":"Vortex Racing","offers":[{"title":"Default Title","offer_id":67598486208828,"sku":"vtx144AZKV4-45","price":92.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1865\/9007\/files\/7d08cc7e82f75e98c8dd04025f3b4eceL_2cbe8902-a27f-4b6a-a7a6-488048ce04a4.jpg?v=1790650124","url":"https:\/\/necycleshop.com\/products\/vortex-racing-v4-45-tooth-520-rear-sprocket-black-6","provider":"NE Cycle Shop","version":"1.0","type":"link"}