Ferrea Valve Spring- AU/VW Dual Spring
Our Ferrea Valve Springs are processed with premium-grade alloy and feature special thermal treatment. Our advanced spring design and material specifications has uniform load & stress distribution even in most extreme racing environment.
- Our beehive design spring offers additional durability in all high revving street performance and mid-race applications at an affordable price.
- The dual spring technology enables you to use in high lift camshafts and extreme high RPM.
| Type/Material/Application | Dual Spring - Turbo Special Alloy (Exhaust - 8 pieces) |
| O.D. | 22.75 mm
29.5 mm |
| I.D. | 17.1 mm
22.75 mm |
| Seat Press. | 80 lbs
@32.5 mm |
| Open Press. | 180 lbs
@22.5 mm |
| Rate Inch | 254 lbs |
| Coil Bind | 20 mm |
| Max Net Lift | 12 mm |
Note:
- This Spring requires Ferrea Titanium Retainer # E11032 and Ferrea Spring Seat Locator # SL1026. (Discard OEM Spring Seat Locator)
This product was added to our catalog on Friday 20 July, 2012.