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Supertech SPR-2082
Supertech Inner valve spring kit BP 1.8 Miata CLOSEOUT
Price: $79.00

Detailed Description

Supertech inner valve spring kit (16)

94-05  Miata  1.8    91-96 Ford Escort GT 1.8   323, 323GT 323GTX 323GTR Familia

This kit (16 springs) upgrades the Supertech SPRK-MM18S single valve spring kit to SPRK-MM18D dual spring kit.
** You must already have the SPRK-MM18S single valve spring kit **

Convert this kit:
Single spring - seat pressure 56lbs @ 34.2mm
Sustained revs to 7400rpm, mechanical over rev to 7800. N/A only

Into this kit:
Heavy double spring - seat pressure 74lbs @ 34.2mm
Sustained revs to 8500pm, mechanical over rev to 9000. > 8psi boost


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