DI2 Sm-ew90-a Electrical Distributor Brand_Favero adjustable retention

adjustable retention

or clocking training kilometres around Pune

With a 30mm rim profile

It's compact enough to fit in a saddle bag or jersey pocket

won't fail early

DI2 Sm-ew90-a Electrical Distributor Brand_Favero adjustable retentionThe Shimano SM EW90 A is a junction unit at the heart of any Di2 electronic groupset it distributes power and data signals from a single battery connection to multiple components across the bike. For Indian riders building or upgrading a Di2 system, this small but critical part keeps every shift precise and every connection clean, whether you're riding through monsoon Chennai or climbing the Western Ghats above Lonavala. Use Cases Daily training.