Improving open top motoring

The latest model in Quantum’s line of open top sports cars is the H4, which employs TFC bumpers and hole plugs to help achieve a high quality of panel and shut line fit. TFC bumpers are used as panel gap buffers on the bonnet and boot lid, and to dampen any minor vibrations. They are also used to `bottom stop’ the rotating rear screen when it is stowed, avoiding any fretting of panels.