{"product_id":"sitta-aluminium-rear-sprocket-honda-cbr-1000-rr-sc57-sc59-sc77-525-37","title":"Sitta Aluminium Rear Sprocket Honda CBR 1000 RR SC57, SC59 \u0026 SC77 (2004-2019) – 525 Pitch, 37-48 Teeth (201N)","description":"\u003cp\u003eMachined from aircraft-grade aluminium and finished to exacting tolerances, the Sitta 201N rear sprocket delivers a measurable reduction in unsprung and rotating mass — exactly where it counts on the Honda CBR 1000 RR. Available in tooth counts from 37 to 48 and eight anodised colours, this is the rear sprocket for riders who refuse to compromise on either performance or longevity.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePremium aluminium construction keeps rotating weight to an absolute minimum without sacrificing structural integrity under sustained high-load use\u003c\/li\u003e\n\u003cli\u003eHard-anodised finish option provides a surface hardness superior to standard anodising, extending service life significantly in demanding track and road conditions\u003c\/li\u003e\n\u003cli\u003eTwelve tooth count options — 37 through 48 — allow precise gearing customisation for everything from high-speed circuit work to aggressive road riding\u003c\/li\u003e\n\u003cli\u003eExclusively engineered for 525 pitch chain, ensuring correct chain engagement geometry and maximum power transfer efficiency\u003c\/li\u003e\n\u003cli\u003ePrecision CNC manufacturing guarantees a bolt-on fit with no modification required — drop-in replacement for SC57, SC59 and SC77 frames\u003c\/li\u003e\n\u003cli\u003eEight colour choices including black, silver, blue, red, orange, gold, green and hard-anodised give you the freedom to complement or contrast your CBR's livery\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eBuild Quality and Materials\u003c\/h2\u003e\u003cp\u003eSitta has built its reputation on producing drivetrain components that meet the exacting demands of professional racing paddocks, and the 201N is no exception. The sprocket body is milled from high-grade aluminium billet, offering an excellent strength-to-weight ratio that outperforms cheaper cast alternatives. The tooth profile is precision-cut to mesh cleanly with 525 pitch chain from the first kilometre, reducing the bedding-in period and limiting early wear on both the sprocket and chain.\u003c\/p\u003e\u003cp\u003eThe hard-anodised variant deserves particular attention. Unlike conventional anodising, the hard-anodise process builds a denser, thicker oxide layer into the aluminium surface itself, dramatically improving abrasion resistance. Riders who cover high annual mileage or regularly use their CBR 1000 RR on track will find it outlasts a standard anodised sprocket by a considerable margin.\u003c\/p\u003e\u003ch2\u003eGearing and Performance\u003c\/h2\u003e\u003cp\u003eSelecting the correct tooth count is one of the most cost-effective performance tuning decisions available to a CBR 1000 RR owner. A smaller rear sprocket in the 37-42 tooth range lowers overall gearing, raising top speed and reducing engine revs at motorway cruising speeds — ideal for long-distance road riders and high-speed circuits such as Hockenheim or Mugello. Moving up to the 43-48 tooth range tightens the gearing ratio, sharpening acceleration out of slow corners and improving overall agility — the preferred choice for short, technical circuits or riders who prioritise drive over ultimate top speed. The Sitta 201N makes it straightforward to experiment with gearing without significant outlay.\u003c\/p\u003e\u003ch2\u003eFitment \u0026amp; Compatibility\u003c\/h2\u003e\u003cp\u003eThe Sitta 201N rear sprocket is designed specifically for the following Honda CBR 1000 RR variants and years:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHonda CBR 1000 RR SC57 — model years 2004 to 2007\u003c\/li\u003e\n\u003cli\u003eHonda CBR 1000 RR SC59 — model years 2008 to 2016\u003c\/li\u003e\n\u003cli\u003eHonda CBR 1000 RR SC77 — model years 2017 to 2019\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eImportant: this sprocket is compatible with 525 pitch chain only. Please verify your chain specification before ordering.\u003c\/p\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBrand: Sitta\u003c\/li\u003e\n\u003cli\u003ePart number: 201N\u003c\/li\u003e\n\u003cli\u003eMaterial: aluminium\u003c\/li\u003e\n\u003cli\u003eChain pitch: 525\u003c\/li\u003e\n\u003cli\u003eAvailable tooth counts: 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48\u003c\/li\u003e\n\u003cli\u003eAvailable colours: black, silver, blue, red, orange, gold, green, hard-anodised\u003c\/li\u003e\n\u003cli\u003eFitment: Honda CBR 1000 RR SC57 (2004-2007), SC59 (2008-2016), SC77 (2017-2019)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sitta","offers":[{"title":"37 \/525 \/ Silver","offer_id":53167874179338,"sku":"si201N37si525","price":60.5,"currency_code":"EUR","in_stock":true},{"title":"37 \/525 \/ Black","offer_id":53167874212106,"sku":"si201N37sw525","price":77.09,"currency_code":"EUR","in_stock":true},{"title":"37 \/525 \/ 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