length adjustment and sway-bar mount

Adjustable upper control arm

Adapts Turbosmart Plumback or Dual Port BMW Kit to Z4

That means the rear would squat a lot during acceleration

Short head lug nuts dedicated for adapters (compatible with 15mm or thicker spacers)

Wastegate Valve Position Sensor JRX4 length adjustment and sway-bar mountValve Position Sensor to suit the Turbosmart Wastegate and Race Port Sensor Caps. You can log the wastegate valve position and know exactly what it is doing in relation to other engine operating conditions. For example, can see at X RPM, your valve lifts Y much, which results in Z boost pressure. No uncertainty, just hard data.