Dura Ace DI2 Sm-ew90-b 5 Port Junction a Groupset Type_Electronic Effetto Mariposa is a reputable

Effetto Mariposa is a reputable Italian brand

and other Direct Mount-compatible cranks

so cross-reference HJC's official size chart for this model

The MET Luop is designed for mountain bike and off-road trail riding

Dura Ace DI2 Sm-ew90-b 5 Port Junction a Groupset Type_Electronic Effetto Mariposa is a reputableThe Shimano Dura Ace Di2 SM EW90 B is a 5 port Junction A unit the nerve centre of a Di2 electronic groupset. It routes power and signal to every connected component, keeping your shifting crisp whether you are climbing the Western Ghats, rolling through Delhi's winter smog, or pushing pace on Chennai's coastal roads. Clean wiring, reliable connections, and Shimano's precision engineering make it an essential part of any Di2 build. Use Cases Daily