All Supertech valve springs are made of Superclean premium chrome vanadium steel, which ensures higher performance and durability at high revs.
The use of high-quality steel alloy provides the additional advantage of better structural memory for all our springs.
Our valve springs are computer designed to ensure that stress levels do not exceed the stress limits specified in the fatigue charts.
Combined with our high-quality steel alloy, Supertech gives the springs greater resistance under extreme conditions, providing the race engine with a major advantage in terms of both performance and durability.
Supertech cam followers are manufactured from a high quality, military-grade titanium alloy and are machined on a CNC to ensure a tight fit.
Our high quality followers are among the best in the industry.
Fits: MINI COOPER R56 2007-2012 - PRINCE ENGINE (Peugeot EP6 207GT/308GTi/408 - Citroen C4/ DS3 w/ THP150 /175 engine)
Dimensions:
Outer diameter of the outer spring: 23,5 mm
Inner diameter of the outer spring: 16,5 mm
Outer diameter of the inner spring: 19,3 mm
Inner diameter of the inner spring: 12,3 mm
Seat pressure: 70 @ 33.6 mm
Open pressure: 163 @ 10 lbs
Max net lift: 11,4 mm
Coil bind: 22,2 mm
Rate: 9,7 lbs
References:
Use with OEM cam follower and valve seat
