Ferrea Valve Spring-HO CRF 250EXH SPR 50@39 165@29
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 | Single Spring - Special Alloy Endurance Application (EXHAUST - 2 pieces) |
| O.D. | 18.10 mm |
| I.D. | 11.50 mm |
| Seat Press | 50 lbs
@39.8mm |
| Open Press | 165 lbs
@29.8mm |
| Rate Inch | 292 lbs |
| Coil Bind | 27.5 mm |
| Max Net Lift | 10 mm |
Note:
- This spring requires Ferrea Titanium Retainers #E11071 (EXH) and Ferrea Spring Seat Locators #SL1058 (EXH)
- Spring pressures are measured with Ferrea Spring Seat Locator #SL1058 (EXH). (Discard OEM Spring Seat Locator)
This product was added to our catalog on Friday 29 June, 2012.