
The heart of the groupset & its key player, the Campagnolo Athena 11spd rear derailleur is constructed along the 11s engineering lines. Ultra-Shift front plate in aluminium creates greater rigidity of the whole, it increases the speed & precision of shifting, reduces play, prolongs the life cycle, & is resistant to corrosion. Ultra-Shift Parallelogram increases rigidity & therefore the speed & precision of shifting, & reduces the weight. Both Ultra-Shift bodies are aluminium, which translates into greater stress resistance, reduction of play, & increased shifting precision. Pulleys in special material that reduces the weight & dampens the annoying vibrations of the chain.