Sitta Front Sprocket for BMW S1000RR K67 (2019-2026) – Part Y001, 14-18 Teeth, 520/525 Pitch

Precise gearing tuning starts with the right front sprocket, and the Sitta Y001 is engineered specifically for the BMW S1000RR K67 (2019-2026). Machined from chromium-molybdenum steel and available in five tooth counts across 520 and 525 pitch, it lets you dial in exactly the acceleration or top-speed character your riding demands — whether that is a daily commute or a full track day at your local circuit.

Key Features

• Chromium-molybdenum steel construction for exceptional wear resistance and long service life
• Five tooth options — 14, 15, 16, 17 and 18 teeth — letting you tailor gearing precisely to your riding style
• Compatible with both 520 and 525 pitch chains, covering stock and conversion setups
• Precision-machined profile for exact fitment with zero slop and straightforward installation
• Equally at home on road and track, delivering consistent power transfer in all conditions

Choosing the Right Tooth Count

The front sprocket tooth count has a direct and immediate effect on how your S1000RR delivers its power. Smaller sprockets shorten the overall gearing ratio, sharpening throttle response and reducing the time to reach peak revs — ideal for tight, technical circuits or urban riding where rapid acceleration matters most. Larger sprockets lengthen the ratio, lowering cruising revs on motorways and raising potential top speed, which suits high-speed circuits or long touring stints where engine stress reduction is a priority.

As a guide: 14 or 15 teeth favour maximum acceleration and engine responsiveness; 17 or 18 teeth prioritise higher top speed and relaxed motorway cruising. The 16-tooth option sits squarely in the middle, preserving the factory balance while still offering a marginal improvement in drivetrain efficiency over a worn OEM unit.

Build Quality and Material

Sitta sources chromium-molybdenum steel for the Y001 because its combination of tensile strength and toughness is well suited to the high-frequency load cycles a high-output four-cylinder engine produces. The alloy resists the micro-pitting and flank wear that reduce efficiency and shorten chain life, meaning the Y001 not only performs well on installation day but continues to deliver consistent power transfer deep into its service life. The tooth profile is cut to exacting tolerances so that chain engagement is smooth and quiet from the first ride.

Fitment and Compatibility

The Sitta Y001 front sprocket is designed and verified for the following applications:

• BMW S1000RR K67 — model years 2019 to 2026
• Chain pitch: 520 and 525

Always confirm your current chain pitch before ordering, particularly if your bike has already been converted to a 520 setup. Part number: Y001.

Specifications