{"product_id":"sitta-aluminium-rear-sprocket-honda-cbr-600-rr-pc37-pc40-pc69-48-520","title":"Sitta Aluminium Rear Sprocket Honda CBR 600 RR PC37, PC40 \u0026 PC69 (2007-2026) – 37-48 Teeth, 520 Pitch (201N)","description":"\u003cp\u003ePrecision-engineered from high-grade aluminium, the Sitta 201N rear sprocket is the trusted choice for Honda CBR 600 RR riders who demand exacting power transfer, measurable weight savings, and the flexibility to dial in gearing for any scenario — from circuit sessions to spirited road riding. With twelve tooth counts spanning 37 to 48 and eight anodised colour options including the exceptionally durable hard-anodised finish, this sprocket sets the standard for the PC37, PC40 and PC69 generations.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHigh-grade aluminium construction delivers maximum rigidity for its weight class, keeping unsprung mass low without sacrificing durability under sustained high-load use.\u003c\/li\u003e\n\u003cli\u003eHard-anodised finish option provides a surface treatment measurably more resistant to wear and corrosion than standard anodising — the sensible choice for riders who log serious mileage or track days.\u003c\/li\u003e\n\u003cli\u003eTwelve tooth options from 37 to 48 teeth allow precise gearing tuning: lower tooth counts increase top speed and reduce engine revs on long straights; higher counts sharpen acceleration and improve agility through technical sections.\u003c\/li\u003e\n\u003cli\u003e520 pitch specification makes the 201N compatible with lightweight 520-conversion setups, a popular choice for performance and racing applications on the CBR 600 RR platform.\u003c\/li\u003e\n\u003cli\u003eSprocket carrier pattern 134\/160-6 bolt ensures straightforward, precise fitment without adaptation — a drop-in replacement for all three frame generations.\u003c\/li\u003e\n\u003cli\u003eAvailable in eight colours — silver, black, hard-anodised, blue, gold, red, orange, and green — so the drivetrain upgrade also refreshes the visual identity of the machine.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eGearing Strategy: Choosing the Right Tooth Count\u003c\/h2\u003e\u003cp\u003eThe sprocket tooth count you select has a direct, measurable effect on how your Honda CBR 600 RR delivers its power. Getting this decision right is as important as any other performance modification.\u003c\/p\u003e\u003cp\u003eA smaller rear sprocket in the 37–42 tooth range shortens the overall gearing, raising top speed and reducing engine revs at motorway cruise — ideal for track layouts with long straights or riders who prioritise relaxed high-speed touring.\u003c\/p\u003e\u003cp\u003eMoving up to the 43–48 tooth range lengthens the gearing ratio in the other direction, sharpening acceleration out of corners and giving the CBR 600 RR a more responsive, flickable character through tight technical sections. This is the preferred choice for short circuits and urban performance riding.\u003c\/p\u003e\u003cp\u003eThe Sitta 201N covers the full practical range for the CBR 600 RR, meaning you can experiment with different configurations to find the exact ratio that suits your riding style and circuit layout — without changing any other component of the drivetrain.\u003c\/p\u003e\u003ch2\u003eBuild Quality and Durability\u003c\/h2\u003e\u003cp\u003eSitta manufactures the 201N from premium aluminium chosen specifically for its balance of tensile strength and light weight. The material resists the deformation and fatigue cracking that cheaper alloys can exhibit under the cyclical loading of a high-revving inline-four. The hard-anodised surface treatment, where selected, penetrates the aluminium substrate rather than simply coating it, producing a finish that outlasts standard anodising in abrasive conditions and resists the oil and chain lubricant contamination inevitable in real-world use.\u003c\/p\u003e\u003cp\u003eThe 520 pitch teeth are profiled to optimise engagement with the chain rollers, distributing load evenly across the contact surface and reducing localised wear — a detail that extends the service life of both the sprocket and the chain it runs with.\u003c\/p\u003e\u003ch2\u003eFitment and Compatibility\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHonda CBR 600 RR PC37 (model years 2007–2008)\u003c\/li\u003e\n\u003cli\u003eHonda CBR 600 RR PC40 (model years 2009–2016)\u003c\/li\u003e\n\u003cli\u003eHonda CBR 600 RR PC69 (model years 2017–2026)\u003c\/li\u003e\n\u003cli\u003eCompatible with 520 pitch chains only\u003c\/li\u003e\n\u003cli\u003eSprocket carrier: 134\/160-6 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\u003e201N\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\u003eChain pitch\u003c\/td\u003e\n\u003ctd\u003e520\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAvailable teeth\u003c\/td\u003e\n\u003ctd\u003e37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSprocket carrier bolt pattern\u003c\/td\u003e\n\u003ctd\u003e134\/160-6 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