copy of DOPPLER chain kit red anodized 420/13 X 53 for BETA RR FACTORY 50 from 2005

Here is a very good chain kit from DOPPLER, it comes with a pinion of 13 teeth and a crown of 53 teeth, this crown is in aluminum and of anodized red color!

It is aesthetic, of course, but also ultra light, which means that the weight has to be trained and less and that the performance is therefore much better! The chain is a reinforced model. This chain kit is mounted on BETA RR FACTORY 50 from 2005.