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. 911, 914, 930, 993-must use 8mm Ti retainers and Aasco Seats
Aasco Motorsports is an American manufacturing and distributing company. Although we strive to have all items in stock our specialty parts can on occasion see delays due to parts being back ordered from Europe or that Aasco must manufacture another batch of homemade flywheels. If a delay occurs Aasco will notify the customer of any potential delays and provide an ETA. If the customer is unsatisfied with the ETA Aasco Motorsports will refund and cancel the sale without issue. We generally will not have delays for more than 2 weeks. Fitment and application information have been compiled from reliable sources and correct to the best of our knowledge. Aasco Motorsports does not assume responsibility for errors found in it's applications guide. For new applications info, installation or diagnostic questions please refer to aascomotorsports.com, e-mail us at firstname.lastname@example.org or call (714)758-8500. Professional installation is always recommended. Please always compare new replacement components to core components being replaced and if differences or question arise please feel free to contact us.