Shimano 105 is a group made for accessible performance, always heir-apparent to components costing three times as much. It’s also the perfect launchpad for our Orca OMP frameset and the Orca M30, a capable racer costing many times less than bikes it can go toe-to-toe with. With Mavic wheels, it’s an obvious candidate for giant killing and taking the weekend road race by storm without the cash outlay. Crankset 34 x 50. Cassette 11-28. 11 speed.