Spoon Sports Progressive Springs Set – Prelude BF1

Spoon has released the new progressive springs set for the Honda Prelude.

We adopted a barrel-shaped spring design.
Unlike conventional straight-wound springs, barrel-shaped springs can provide multiple spring rates due to differences in the spring diameter (coil size).

By taking advantage of the characteristics of this shape, we achieved a suspension setup that uses a lower spring rate around the 1G load rangewhere ride comfort is most importantand a higher spring rate during high-speed cornering.

The spring rates were tested across various conditions, including winding roads and mini circuits, and were set at 4.5 kgf/mm for the front and 5.1 kgf/mm for the rear.The front and rear bump rubbers must be trimmed by 20 mm.

Ride heightFRONT-20mm
REAR -20mm