Qarbon owns this principle and places the RIGHT MATERIAL IN THE RIGHT SPOT, 7075-T6 aluminum in perfect composition with high modulus carbon fiber. 8% lighter but 20% stiffer.

50 tooth ROTOR Qarbon Aero carbon 110X4 Shimano pattern Q rings available from Velotech Services

PLEASE NOTE: ONLY COMPATIBLE WITH ULTEGRA 6800 & DURA ACE 9000 CRANKS