Since Season 2, the Formula E rules have allowed teams to design and develop their own rear suspension. There are now a number of different variants in use; we are going to look at a typical independent push-rod setup used on all cars in Season 1. Machined uprights house the rear axles and connect the upper and lower wishbones at the outboard end. Each side can move up and down completely independently of the other, transferring loads through the push-rods. Sitting on top of the gearbox are the dampers, or shock absorbers, with interchangeable springs mounted over the top. They support the weight of the car, and control the weight transfer under braking and acceleration. Their settings also determine how it handles the lumps and bumps of a typical street track. Machined rockers connect the shocks to the push-rods and transfer the vertical loads seen at the wheels into the horizontal forces managed by the dampers. High-quality needle roller bearings ensure the rocker rotates smoothly, even despite the enormous and violent forces acting upon it, allowing the engineers to accurately measure and fine-tune the car’s setup. Also attached to the rockers are links connected to the rear anti-roll bar; the only part of the suspension linking both rear corners of the car together. The anti-roll bar is fully-adjustable, and allows the team to manage the roll, or how much the car leans in the corners. Getting the whole lot set up to suit your car, your driver, and of course the circuit, is the key to unlocking the fastest lap time possible.