****NOTE THIS DOES NOT FIT THE HP4 BIKE WITH UPGRADED WHEELS****
This is one 16 tooth front and one 45 tooth rear Vortex RX3 520 Pitch Sprocket and EK/Vortex GOLD Chain KIT(chain is a Vortex chain made by EK) great quality. This is an upgraded higher rated chain for 1000cc
THIS HAS THE SUPER DURABLE STEEL SPROCKETS FRONT AND REAR
Fits 2012-2019 BMW S1000RR--sportbike
Fits 2014-2019 BMW S1000R--std bike
This is the popular -1 tooth on front sprocket mod
Using a lighter 520 pitch chain will shave weight as well.
16 Tooth Front Sprocket
45 Tooth Steel Rear Sprocket
120 Link 520Pitch RX3 GOLD Chain
Please see fitment chart above.