Subaru STi Performance Parts
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COSWORTH HIGH RPM SINGLE VALVE SPRING SET (16) EJ20/EJ25 - STI 04-07
PRODUCT OVERVIEW
Cosworth
High RPM Vale Springs are the result of countless hours of engineering,
testing and validation ensuring the best possible spring for high
performance applications. Cosworth High RPM Valve Springs are wound
from the world's finest Japanese Kobe steel and feature dual chamfered
ends to reduce wear on seats and retainers. Each spring has been
engineered with increased seat pressure along with higher lift
capability for optimum performance potential and improved valve
control. Single spring design allows easy installation with no
machining required and is perfect for typical high performance use. Specifications:- Manufactured
from the finest Japanese Kobe Steel
- Single spring
design for easy installation
- Dual chamfered
ends
- Increased
performance
- Beehive shape
allows use of original lightweight alloy retainer
| Free |
L1 |
F1 |
F1 |
L2 |
F2 |
F2 |
Max |
Coil |
| height |
mm |
N |
lbs. |
mm |
N |
lbs. |
Lift |
Bind |
| 42.00 |
36.0 |
275 |
62 |
25.0 |
780 |
175 |
11.0 |
23.2 |
- L1=Install Height
- F1=Force @ L1
- L2=Max Lift
- F2=Force @ Max Lift
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