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Recent Addition more
Piston Set V-6 3.0 L 10.5:1 95mm Big Bore 3.1L Conversion
Piston Set V-6 3.0 L 10.5:1 95mm Big Bore 3.1L Conversion
$1,425.00
$1,325.00
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Valve Spring Set Race High RPM Lift Up to 13mm 4 Cyl & TS
[VSS12-1]
$165.00 $145.00

INSTALLED HEIGHT SHOULD BE CHECKED AND ADJUSTED AS NECESSARY.

CUSTOMER COMMENT:

I just installed your valve springs.  I'm actually very impressed by the quality.  I checked them with a Rimac spring tester and managedto pair them into 8 sets with less than 1 lbs. in difference between the sets.  Regards--PT (Denmark)

With the popularity of 12 and 13 mm cams we are offering this upgrade spring. The REM finishing process results in a harder more durable surface that improves the fatigue factor and reduces friction (heat) between inner & outer springs. 

Our VSS12-1 Upgrade High RPM Springs became a necessity when customers began using 12-13mm cams at sustained high RPM.  From our engine research, we developed VSS12-1 springs that could take this beating, maintain good pressure and resist fatigue.  With this upgraded spring, our most aggressive engine builders reported improved top end performance and improved spring memory. 

For full race these chrome silicons alloy springs will increase performance and reliability.

Shifting at 7500 is the general practice, but often it is necessary to extend this to 8000 and beyond on many race tracks and in red mist confrontations.

We offer another upgrade that is designed for high lift cams  (12mm up) or engines that are routinely pushed beyond  8000.  Click here to view the upgrade VSS1214 .

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