{"product_id":"bmw-s1000rr-2021-vortex-v4-rear-sprocket-520-chain-pitch","title":"BMW S1000RR, 2021+, Vortex V4 Rear Sprocket - 520 Chain Pitch","description":"\u003cp\u003e\u003cem\u003e\u003cstrong\u003e\u003cspan\u003e**FOR SPROCKETS, PLEASE LEAVE FULL MAKE \/ MODEL \/ YEAR \/ WHEEL TYPE (OEM or aftermarket) OF YOUR MACHINE IN THE \"COMMENTS\" SECTION ON CHECKOUT**\u003c\/span\u003e\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Vortex V4 Sprocket is the next evolution of Vortex’s lightweight aluminum rear sprocket platform, designed for riders who want sharper response, clean styling, and proven Vortex fitment. Machined from 7075-T6 aluminum, the V4 uses a more aggressive weight-reduction design while maintaining the strength and precision riders expect from Vortex.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCompared to the traditional CAT5 aluminum sprocket, the V4 design reduces rotating mass with advanced machining on both sides of the sprocket. The result is a lighter, more responsive sprocket built for sportbike riders, track-day users, and racers looking to fine-tune performance without sacrificing quality.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAvailable in multiple colors and tooth-count options, the V4 gives riders a functional performance upgrade with a clean, high-end look.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eKey Features\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e7075-T6 aluminum construction for an excellent strength-to-weight balance\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eLighter than the traditional CAT5 sprocket design, helping reduce rotating mass\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eMachined on both sides for improved weight reduction and a more refined finish\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003ePrecision CNC-machined for accurate fitment and consistent chain engagement\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003ePerformance-focused tooth profile designed for smooth chain operation\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWide range of tooth counts to support stock replacement and gearing changes\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAvailable in multiple color options to match the look of the bike\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eBuilt for sportbike, track-day, and race applications\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eMade in the USA with Vortex manufacturing quality\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDesigned as a premium lightweight rear sprocket option for riders who want performance and appearance\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"margin: 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