K and N Performance Pricing
| Which car ? | K&N Part | Retail price without fitting | Example price when fitted by Esprit Engineering |
| Esprit (4 cylinder) | Panel Replacement Filter (no modifications required) | £42.75 | £52.75 |
| Esprit V8 | Panel Replacement Filters (pair) | £75.00 | £85.00 |
| Elan M100 | Cylinder Replacement Filter | £38.50 | £48.50 |
| Elise | 57i Induction Kit | £58.00 | £83.00 |
| Elise | Cold Air Induction Kit | £195.00 | £225.00 |
| Elise | Carbon Fibre Air Box Induction Kit | £263.00 | £285.00 |
| MGF | Fibre Glass Air Box Induction Kit | £241.00 | £265.00 |
| MGF or Elise | Replacement Filter for Air Box | £28.00 | £38.00 |
| N/A | K&N Filter service kits (aerosol) | £8.20 | N/A |