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PAC Valve Springs

PAC Valve Springs


PAC racing valve springs began its existence with cutting edge technology in material advancements and processing advancements that have allowed our valve springs to excel in all forms of racing. From PAC proprietary alloy PACALLOY, to PAC-enhanced processing to our continued development of further materials and processing, PAC racing springs will give you the competitive edge you need in the demanding stresses of racing.


PAC racing valve springs gives an attention to detail in spring manufacturing which is highly uncommon throughout standard spring making processing. From Design, manufacturing, customer satisfaction, no detail is left un-noticed. Whether you need springs to endure motorcycle engines at 15.000 RPM, your 10.000 RPM cup engine, or springs for your racing lawn mower, PAC racing valve springs has the technical edge and experience to propel you to the finish line.





Part no.

Click for datasheet

O/D // I/D // Free L // Solid L


single springs



PAC-S90006

D34.2 // d4.5 // Lf49.5 // Ls22.0


PAC-S90007

D33.6 // d4.5 // Lf47.0 // Ls20.0


PAC-S90010

D29.1 // d4.0 // Lf44.0 // Ls21.4


PAC-S10011

D28.4 // d4.1 // Lf44.7 // Ls22.2


PAC-S90013

D21.0 // d3.3 // Lf40.1 // Ls20.9


PAC-S90015

D25.4 // d3.6 // Lf46.2 // Ls22.9


PAC-S90019

D27.7 // d3.8 // Lf44.0 // Ls21.2


PAC-S99843

D30.1 // d4.0 // Lf44.7 // Ls21.6

GOLD processing: PAC-S19843




double springs



PAC-D92009

PAC-E92009 + I92009

GOLD processing: PAC-D12009

PAC_D95009

PAC-E95009 + I95009

GOLD processing: PAC-D15009

PAC-D99859

PAC-E99859 + I99859

GOLD processing: PAC-D19859

PAC-D99860

PAC-E99860 + I99860


PAC-D99861

PAC-E99861 + I99861


PAC-D99862

PAC-E99862 + I99862

GOLD processing: PAC-D19862

PAC-D99864

PAC-E99864 + I99864

GOLD processing: PAC-D19864

PAC-D99891

PAC-E99891 + I99891

GOLD processing: PAC-D19891




exterior springs



PAC-E92009

D28.6 // d3.6 // Lf39.3 // Ls16.6

GOLD processing: PAC-E12009

PAC-E95009

D30.7 // d3.8 // Lf43.6 // Ls17.7

GOLD processing: PAC-E15009

PAC-E99859

D32.2 // d3.8 // Lf41.0 // Ls16.4

GOLD processing: PAC-E19859

PAC-E99860

D30.4 // d3.8 // Lf38.7 // Ls16.5


PAC-E99861

D29.4 // d3.8 // Lf36.8 // Ls16.7


PAC-E99862

D25.4 // d3.6 // Lf42.3 // Ls20.1

GOLD processing: PAC-E19862

PAC-E99864

D24.8 // d3.3 // Lf41.3 // Ls18.2

GOLD processing: PAC-E19864

PAC-E99891

D30.9 // d4.0 // Lf49.3 // Ls21.6

GOLD processing: PAC-E19891




interior springs



PAC-I92009

D21.3 // d2.5 // Lf38.8 // Ls13.8

GOLD processing: PAC-I12009

PAC-I95009

D23.2 // d2.9 // Lf39.2 // Ls15.4

GOLD processing: PAC-I15009

PAC-I99859

D24.7 // d3.0 // Lf38.9 // Ls15.1

GOLD processing: PAC-I19859

PAC-I99860

D20.9 // d2.5 // Lf34.7 // Ls13.6


PAC-I99861

D21.3 // d2.5 // Lf33.4 // Ls13.9


PAC-I99862

D18.2 // d2.5 // Lf39.2 // Ls17.9

GOLD processing: PAC-I19862

PAC-I99864

D18.2 // d2.3 // Lf37.7 // Ls15.8

GOLD processing: PAC-I19864

PAC-I99891

D22.2 // d2.9 // Lf49.0 // Ls19.8

GOLD processing: PAC-I19891