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Vehicle Set: Click here to shop 99-00 Honda Civic Si (EM1) mods.

99-00 Honda Civic Si Valve Locks

Want to modify or upgrade your 99-00 Honda Civic Si (EM1) with aftermarket valve locks? At ClubCivic.com we have a great selection of aftermarket performance parts for your 6th generation Honda Civic Si. We have 2 Valve Locks available in our catalog and most have free shipping.


Brian Crower Civic Mods

Brian Crower Valve Keepers/Locks

Brian Crower Valve Keepers/Locks BC2940
BC2940
Brian Crower Honda/Acura 5.5mm Stem Keepers/Locks (fits BC2010 & BC2011 retainers)
1999-2000 Honda Civic Si
Manley Performance Civic Mods

Manley Performance Valve Locks

Manley Performance Valve Locks 13010-8
13010-8
Manley Honda/Acura 5.5mm OEM Radius Sport Compact Valve Locks (8pc)
1999-2000 Honda Civic Si