05/27/2026
Spoon Sports Progressive Springs for Prelude BF1 is now available for pre-order.
Spoon Sports 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, Spoon achieved a suspension setup that uses a lower spring rate around the 1G load range—where ride comfort is most important—and 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 height: FRONT -20mm, REAR -20mm
Spoon Progressive Springs - Prelude BF1
Product number: 51400-BF1-001
Price: $425
www.spoonusa.com