520 rear sprocket for racing rim (70 / 100 / 12 mm)
from esjot (alpha racing)
Fits to:
- BMW HP4 2012-2014
- BMW HP4 Race 2017-2018
- BMW S 1000 RR 2015 - 2016 (only with HP rims)
39-46 teeth (please select number of teeth)
light racing rear sprocket from very strong aluminium alloy (aircraft alloy)
colour: silver anodised
Serial bikes are often equiped with a very long gear transmission due to noise or exhaust regulations. In most cases these transmissions don´t fit best for racetracks. Often pinions with 1-2 teeth less and / or rear sprockets with 1-3 teeth more are used. In some cases a longer chain is needed. Only on racetracks with very high speed (e.g. Isle of Man, Hockenheim GP) and very narrow tracks (e.g. Fischereihafen in Bremerhaven) such an conversion will not fit best.