Sitta Aluminium Rear Sprocket Honda CBR 1000 RR SC57, SC59 & SC77 (2004-2019) – 37-48 Teeth, 520 Pitch (201N)

Precision-machined from high-grade aluminium, the Sitta 201N rear sprocket is engineered to deliver exceptional power transfer and long-term durability on the Honda CBR 1000 RR across all three chassis generations — SC57, SC59 and SC77. Whether you are chasing lap times or extracting the most from spirited road riding, this is a component built to the standard your CBR deserves.

Key Features

• High-grade aluminium construction offers an outstanding balance of rigidity, wear resistance and reduced unsprung weight compared to steel alternatives.
• Eight finish options — silver, black, hard-anodised, blue, gold, red, orange and green — with the hard-anodised variant offering a notably harder surface layer and superior longevity over standard anodising.
• Twelve tooth count options from 37 to 48 teeth allow precise gearing adjustment for circuit use, fast road riding or anywhere in between.
• 520 pitch specification — optimised for performance and lightweight drivetrain conversions on the CBR 1000 RR platform.
• Manufactured to tight tolerances for a precise, rattle-free fit that makes installation straightforward and removes any drivetrain slack.
• Covers model years 2004 through 2019, spanning SC57, SC59 and SC77 chassis designations in a single part number.

Build Quality and Materials

Sitta produces the 201N from a high-tensile aluminium alloy, chosen for its ability to withstand the cyclical stresses of high-revving four-cylinder power delivery without adding unnecessary mass to the drivetrain. Each tooth profile is machined to precise tolerances, which translates directly into smoother chain engagement and reduced wear on both the sprocket and chain over extended service intervals.

The hard-anodised finish deserves particular mention: the electrochemical treatment creates a surface layer that is considerably harder than standard anodising, resisting abrasion from the chain side-plates and maintaining a cleaner appearance for longer. For riders who train regularly on track or cover significant mileage on road, the hard-anodised option represents a worthwhile upgrade in service life.

Gearing and Performance

Selecting the correct tooth count reshapes the entire character of how the CBR 1000 RR delivers its performance. Opting for a smaller sprocket in the 37-to-42-tooth range reduces overall gearing ratio, lowering engine speed at a given road speed and extending the top-end reach — the preferred choice for fast circuits with long straight sections. Moving to a larger sprocket in the 43-to-48-tooth range tightens the gearing ratio, sharpening acceleration out of slow corners and increasing mechanical advantage — ideal for technical tracks or riders who want a more responsive throttle on the road.

With twelve distinct tooth options under a single part number, the Sitta 201N gives CBR 1000 RR owners a level of drivetrain customisation that is rarely available at this quality point.

Fitment and Compatibility

This sprocket is compatible exclusively with the 520 chain pitch. Verify your chain specification before ordering.

• Honda CBR 1000 RR SC57 — model years 2004 to 2007
• Honda CBR 1000 RR SC59 — model years 2008 to 2016
• Honda CBR 1000 RR SC77 — model years 2017 to 2019

Specifications