{"product_id":"sitta-201h-525","title":"Sitta Aluminium Rear Sprocket for Marchesini, OZ and BST Carriers (201H) – 37-48 Teeth, 525 Pitch","description":"\u003cp\u003eEngineered for riders who refuse to compromise on fit, feel, or longevity, the Sitta 201H aluminium rear sprocket slots directly onto Marchesini, OZ and BST sprocket carriers with the precision you would expect from a purpose-built racing component. Available in 37 to 48 teeth for the 525 pitch chain, it lets you dial in exactly the gearing character your riding demands — whether that means effortless highway cruising or razor-sharp track acceleration.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eLightweight aluminium construction weighing just 350 g at size 45, reducing unsprung and rotating mass for sharper throttle response and more agile handling.\u003c\/li\u003e\n\u003cli\u003e12 tooth options from 37 to 48 teeth allow precise gearing tailored to your riding style, circuit layout or road preference.\u003c\/li\u003e\n\u003cli\u003eExclusive 525 pitch compatibility ensures optimum chain engagement, load distribution and drivetrain durability.\u003c\/li\u003e\n\u003cli\u003e76\/100-5 hole sprocket carrier pattern guarantees a secure, rattle-free fit on Marchesini, OZ and BST hubs with no modification required.\u003c\/li\u003e\n\u003cli\u003eEight anodised colour options — including hard-anodised finish which outlasts standard anodising under sustained stress and heat — let you match or contrast your wheel and chassis livery.\u003c\/li\u003e\n\u003cli\u003eHigh resistance to wear even under sustained high-load conditions, making it equally suited to track days and spirited road use.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eGearing Guide: Choosing Your Tooth Count\u003c\/h2\u003e\u003cp\u003eSelecting the right tooth count transforms how your motorcycle feels on the road or circuit. Understanding the trade-offs helps you make the most of the 201H's wide range.\u003c\/p\u003e\u003cp\u003eA smaller rear sprocket (37–42 teeth) lowers the overall gearing ratio, reducing engine revs at a given road speed and extending your top speed potential — ideal for fast, flowing circuits or motorway commutes. A larger rear sprocket (43–48 teeth) raises the ratio, sharpening acceleration out of slow corners, improving low-speed traction feel and giving the bike a more responsive, agile character. The 201H covers both ends of the spectrum, so a single sprocket change is all it takes to remap your motorcycle's character for the day's task.\u003c\/p\u003e\u003ch2\u003eBuild Quality and Finish\u003c\/h2\u003e\u003cp\u003eSitta manufactures the 201H from high-grade aluminium, struck to tight dimensional tolerances for consistent chain alignment and smooth power transfer. The standard anodised finishes — silver, black, orange, red, gold, green and blue — provide a clean protective layer that resists corrosion and minor abrasion. Riders who put heavy miles on track or in harsh conditions should consider the hard-anodised option, which delivers a substantially denser, harder surface than conventional anodising and significantly extends service life before visible wear appears.\u003c\/p\u003e\u003cp\u003eAt only 350 g for a 45-tooth sprocket, the weight saving over a steel equivalent is substantial. Lower unsprung mass directly benefits suspension compliance, and reduced rotational inertia means the engine spins up and responds to throttle inputs more freely — a genuine on-road and on-track advantage that you feel with every corner exit.\u003c\/p\u003e\u003ch2\u003eFitment and Compatibility\u003c\/h2\u003e\u003cp\u003eThe Sitta 201H rear sprocket is designed exclusively for motorcycles equipped with Marchesini, OZ or BST wheels using the standard sprocket carrier interface. It is compatible only with 525 pitch chains and chains must be verified as 525 before ordering. The carrier bolt pattern is 76\/100-5 hole. Always verify your wheel brand, pitch, and carrier specification before purchasing.\u003c\/p\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart Number: 201H\u003c\/li\u003e\n\u003cli\u003eBrand: Sitta\u003c\/li\u003e\n\u003cli\u003eMaterial: Aluminium\u003c\/li\u003e\n\u003cli\u003eChain Pitch: 525\u003c\/li\u003e\n\u003cli\u003eAvailable Teeth: 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48\u003c\/li\u003e\n\u003cli\u003eWeight: approx. 350 g (45 teeth)\u003c\/li\u003e\n\u003cli\u003eSprocket Carrier Pattern: 76\/100-5 hole\u003c\/li\u003e\n\u003cli\u003eCompatible Carriers: Marchesini, OZ, BST\u003c\/li\u003e\n\u003cli\u003eAvailable Colours: Silver, Black, Hard-Anodised, Orange, Red, Gold, Green, Blue\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sitta","offers":[{"title":"37 \/525 \/ Silver","offer_id":53167894429962,"sku":"si201H37si525","price":60.5,"currency_code":"EUR","in_stock":true},{"title":"37 \/525 \/ 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