Spoon Sports Progressive Lowering Springs - Prelude BF1
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- Description
- Suitable For
Spoon Sports Progressive Lowering Springs, for Honda Prelude BF1
The Spoon Sports Progressive Spring, part number 51400-BF1-001, is a barrel-shaped lowering spring set for the Prelude BF1 that drops the car 20mm front and rear.
A barrel-shaped spring varies its coil diameter, so unlike a conventional straight-wound spring it carries more than one spring rate. That lets the Prelude run a lower rate around 1G, where ride comfort is decided, and a higher rate in high-speed corners. Spoon set the rates at 4.5kgf/mm front and 5.1kgf/mm rear after testing on winding roads and mini circuits.
Key features
- Barrel-shaped progressive design: low rate around 1G, higher rate at speed.
- Spring rates: 4.5kgf/mm front and 5.1kgf/mm rear.
- Ride height: 20mm lower, front and rear.
- Bump rubbers: the front and rear bump rubbers must be trimmed by 20mm.
Specifications
| Brand | Spoon Sports |
|---|---|
| Part number | 51400-BF1-001 |
| Supplied as | Set |
| Ride height change | -20mm front, -20mm rear |
| Spring rate, front | 4.5kgf/mm |
| Spring rate, rear | 5.1kgf/mm |
| Model code | 6AA-BF1 |
| Engine | LFC |
Fitment
Fits the Honda Prelude BF1 (2025-2026), 6AA-BF1. Fitting requires the front and rear bump rubbers to be trimmed by 20mm.
Frequently asked questions
Do the bump rubbers need modifying?
Yes. Spoon states the front and rear bump rubbers must be trimmed by 20mm.
Why is the spring barrel-shaped?
It gives the spring multiple rates, with a low rate around 1G for comfort and a higher rate for high-speed cornering.
How much lower will my Prelude sit?
20mm lower at the front and rear.
Compatible OEM Numbers
- 2025 to 2026 Honda Honda Prelude (BF1)
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