BMW S1000RR Front-Rear Sprocket Vortex Years: 2009-2018 Front Sprocket Teeth: 15-17 Teeth, Please specify Rear Sprocket Teeth: 44-47 Teeth, Please specify Pitch: 525 When paying please write the SPROCKET TOOTH COUNT you want us to ship in your PayPal payment notes. You can also email us your sprocket tooth count information before / after check-out via messages. Vortex Front and Rear Sprockets Fitment: BMW S1000RR Years: 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 Pitch: 525 Front Sprocket Teeth: Available in 44-47 Teeth Rear Sprocket Teeth: Available in 15-17 Teeth ORDERING INSTRUCTIONS: Refer to the sprocket tooth counts available above. When paying write the FRONT AND REAR SPROCKET TOOTH COUNT you want us to ship in your PayPal payment notes. For example: if you want a 40 tooth rear sprocket write: "40 TOOTH" in the notes to seller section of your PayPal payment. Then write "17 TOOTH for the Front Sprocket", for example. You can also email us your sprocket tooth count and color information before or after check-out. Front Sprocket Features: Vortex Steel Front Sprocket Drilled lightening holes reduce rotating mass High carbon steel for maximum strength Special Vortex Nickel plating to resist corrosion Induction hardened to reduce surface wear Rear Sprocket Features: Vortex Steel Rear Sprockets are the perfect balance of weight, strength and style. They comprise of hardened carbon steel and a electro-plated satin finish to resist corrosion. Their hardened teeth ensure that the sprocket will hold up to many miles without affecting its strength. Carbon steel construction Tough satin finish Longer lasting than aluminum sprockets Weight reducing cutouts We are an authorized Vortex dealer. Get images that make Supersized seem small. THE simple solution for sellers.