{"product_id":"sitta-aluminium-rear-sprocket-kawasaki-zx-4rr-201w","title":"Sitta Aluminium Rear Sprocket Kawasaki ZX-4RR (2023-2026) 201W – 40-50 Teeth, 520 Pitch","description":"\u003cp\u003eMachined from premium aluminium and finished in a palette of eight anodised colours, the Sitta 201W rear sprocket brings a level of craft and visual distinction that sets it apart from the standard item — and from the ordinary aftermarket. Designed specifically for the Kawasaki ZX-4RR Ninja across model years 2023 to 2026, it pairs authentic Sitta heritage with a weight of just 350 g (at 45 teeth) to sharpen the character of one of the most exciting four-cylinder middleweights on the market.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCNC-machined high-grade aluminium construction for precise tooth geometry, low vibration and a weight of only 350 g at the 45-tooth size\u003c\/li\u003e\n\u003cli\u003e520 pitch — correctly specified for the ZX-4RR drivetrain, whether road or track-configured\u003c\/li\u003e\n\u003cli\u003e11 tooth options from 40 to 50 teeth, allowing genuine fine-tuning of gearing character to suit your riding style\u003c\/li\u003e\n\u003cli\u003eEight anodised finish options: silver, black, hard-anodised, green, red, blue, orange and gold — hard-anodised offering superior surface durability compared to standard anodising\u003c\/li\u003e\n\u003cli\u003eSprocket carrier pattern 80\/104 — 6-bolt for accurate, straightforward fitment with no modifications required\u003c\/li\u003e\n\u003cli\u003eEngineered for minimal wear under sustained high-load conditions, equally at home on track days and spirited road riding\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDesign, Finish and Heritage\u003c\/h2\u003e\u003cp\u003eSitta has been producing precision drivetrain components for competition and performance road use for decades, and the 201W carries that lineage into the ZX-4RR generation. Each sprocket is CNC-machined rather than stamped, meaning the tooth profile is held to tight tolerances that translate directly into smooth chain engagement and reduced drivetrain noise over the life of the component.\u003c\/p\u003e\u003cp\u003eThe finish options are not a cosmetic afterthought. Standard anodising provides a corrosion-resistant, lightweight surface layer; the hard-anodised variant goes further, building a significantly denser oxide layer that resists abrasion from road debris and chain contact more effectively. Gold, blue, orange and green anodised options offer the same protection with a visual statement that complements the ZX-4RR's aggressive bodywork lines. Silver and black deliver the understated look suited to a track-focused build.\u003c\/p\u003e\u003ch2\u003eGearing — Choosing the Right Tooth Count\u003c\/h2\u003e\u003cp\u003eThe eleven available sizes give meaningful adjustment across the ZX-4RR's power band. Selecting a smaller sprocket in the 40-45 tooth range shortens the overall gearing ratio, reducing engine speed at a given road speed and extending top-end reach — well suited to longer circuits or motorway touring. Moving up to 46-50 teeth lengthens the ratio, improving pull out of tight corners and making the engine feel more responsive in everyday traffic or technical, stop-start circuits. The 201W's wide range means a single carrier serves every tuning scenario without the need for a different part number.\u003c\/p\u003e\u003ch2\u003eFitment and Compatibility\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eKawasaki ZX-4RR Ninja — model years 2023, 2024, 2025 and 2026\u003c\/li\u003e\n\u003cli\u003e520 pitch chain only\u003c\/li\u003e\n\u003cli\u003eSprocket carrier: 80\/104 — 6-bolt pattern\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSitta\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart number\u003c\/td\u003e\n\u003ctd\u003e201W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAluminium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eapprox. 350 g (45-tooth size)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChain pitch\u003c\/td\u003e\n\u003ctd\u003e520\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAvailable tooth counts\u003c\/td\u003e\n\u003ctd\u003e40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSprocket carrier pattern\u003c\/td\u003e\n\u003ctd\u003e80\/104 — 6-bolt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAvailable colours\u003c\/td\u003e\n\u003ctd\u003eSilver, black, hard-anodised, green, red, blue, orange, gold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eKawasaki ZX-4RR Ninja (2023-2026)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Sitta","offers":[{"title":"40 \/520 \/ Silver","offer_id":53167930016010,"sku":"si201w40si520","price":56.6,"currency_code":"EUR","in_stock":true},{"title":"40 \/520 \/ Black","offer_id":53167930048778,"sku":"si201W40sw520","price":73.19,"currency_code":"EUR","in_stock":true},{"title":"40 \/520 \/ Hard-Anodised","offer_id":53167930081546,"sku":"si201W40od520","price":73.19,"currency_code":"EUR","in_stock":true},{"title":"40 \/520 \/ Green","offer_id":53167930114314,"sku":"si201w40gr520","price":73.19,"currency_code":"EUR","in_stock":true},{"title":"40 \/520 \/ Red","offer_id":53167930147082,"sku":"si201w40r520","price":73.19,"currency_code":"EUR","in_stock":true},{"title":"40 \/520 \/ Blue","offer_id":53167930179850,"sku":"si201w40bl520","price":73.19,"currency_code":"EUR","in_stock":true},{"title":"40 \/520 \/ 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