Valve springs

Valve spring kit - high performance. 



Fits:
Porsche 911 - 1965 to 1989
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998

Our Valve Springs are designed and manufactured to specifically fit the envelope of a Porsche application not a spring from another use. 

It operates a higher natural frequency than the original spring for racing and at the very least minimizes damage from over rev in track day situations. 

Please note
993 - must use 8mm Ti retainers and Aasco Seats

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

HP109

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9mm Titanium valve spring retainer disc kit - high performance. 



Fits:
Porsche 911 - 1965 to 1989
Porsche 964 - 1989 to 1994

9mm Porsche 911 titanium valve spring retainers for 9mm valves. 

Can be used to directly replace OE retainers but we recommend using in conjunction with Aasco HP109  valve springs and HPSS spring seats.

Set of 12

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

HP10T9

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Valve spring seat kit - high performance. 



Fits:
Porsche 911 - 1965 to 1989
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998

Our Steel Spring Seats pocket the inner spring of our Aasco High Performance Valve Springs.

Our Valve Springs are designed and manufactured to specifically fit the envelope of a Porsche application not a spring from another use. 

It operates a higher natural frequency than the original spring for racing and at the very least minimizes damage from over rev in track day situations. 

Please note
993 - must use 8mm Ti retainers and Aasco Seats

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

HPSS

The product you are viewing cross references to these numbers