The cage made entirley of aluminium alloy exploits the Z-Shape of the inner plate to permit immediate and precies shifting.
The system is more rigid thanks to the use of the M-brace™ derailleur body while its life has been increased by the antifriction treatment of the surfaces.

• Light alloy structure
• Even-O™ frame clamp
• Body with M-brace™ geometry
• Same geometry for the compact or standard crankset