The raleigh strada electric bike 2017 is a fast city bike that gets the addition of power the strada e uses shimano39s steps e bike system with di2 electronic shifting to make the perfect commuter bike raleigh strada electric bike 2017 making use of shimano39s latest e bike technology the strada e makes the perfect commuting e bike the combination of the steps drive unit and the di2 internal gear hub enables you to use the fully automatic shifting function torque speed and cad