Works'91 TeamSpec 2.0mm Graphite Upper Deck Spacer - YZ-003SG by Yokomo  [YZ-003SG]

Rear deck stiffening spacer

The YZ-003SG graphite spacer fits between the rear bulk and upper deck on Works'91 TeamSpec cars, providing targeted stiffness where it influences rear-end balance and transient response.

Installation is straightforward: the spacer is positioned between the rear bulk and the upper deck stack and secured with the existing deck fasteners, so the chassis layout is preserved. As it changes local rigidity rather than geometry, you should see differences in bite and responsiveness rather than ride height or suspension travel.

Use this spacer when you need a minor, reversible adjustment to rear stiffness for tuning purposes — for example to reduce rear flex on high-grip tracks or to sharpen exit response in tight corners.