For CERVELO R2 S3 Rear Derailleur Derailleur Protection Derailleur Hanger
X Bike Rear Derailleur hanger. for R2 - 2015. for S3 - 2013-15. Made of high quality material, and practil to use. for R3 - 2012-2015. for R3 Team - 2012-2013. for R5 - 2012-15. for R5 - 2012-14.