From their announcement:
The effectiveness of bike units has long been known to the Guild. Employed with tremendous success in urban environments as well as making excellent scout units in combat zones. However as a full strength Precinct, Speed is now matched with firepower, giving a battle force commander the option to seize an objective quickly and in all likelihood hold it until better armoured units can come to reinforce the position.
This Blister contains 72 Guild Rapid Response Bikes in 6mm scale.