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Reference: Honda Spring Rates

Discussion in 'Wheels / Tires / Brakes / Suspension DIY How-To's' started by Eran, Nov 8, 2005.



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  1. Eran

    Eran It's on ass-backwards. Registered VIP Registered OG 5+ Year Member 10+ Year Member

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    Here is a compiled list of spring rates for many different aftermarket (and OEM) springs for Civics and Integras. I am still working on my 88-91, 92-95, and 01+ (Non-EP3) listings, and they will be added to this in due time. Sorry, I don't yet have the spring rates for the factory EP3. If anyone has more information, or corrections, let me know so I can add them. A big thanks to JDMFreak, EXavier, and PahLok from HT. :thumbs up

    P = Progressive
    L = Linear


    For 96-00 Civics (EJ, EK and EM1 chassis codes)
    Code:
    96-00 EX factory			165F/80R (P/P)
    99-00 Si (EM1) factory			201F/99.8R (P/P)
    CTR factory				240/240 (L/P)
    APEX'i WS				447F/178R
    Eibach ProKit				290F/190R (P/P)
    Eibach Sportline			310F/275R (P/P)
    Gold-line GL 2.5" drop			320/190 (P/P)
    Gold-line GPS 1.25" drop		275/160 (P/P)
    Ground Control Coilover			380F/280R (P/P)*
    H&R OE					280F/190R (P/P)
    H&R Sport				330F/280R (P/P)
    JIC FLT-A2s (USDM)			504F/336R (L/L)
    Koni RSK Suspension kit			154-205/270 (P/L)
    Neuspeed SofSports			260F/150R (P/P)
    Neuspeed Sport				280F/180R (P/P)
    Neuspeed Race				485F/395R
    Omni-Power Adjustable Sleeve Coilover	448F/336R (L/L)*
    Omni-Power Street Coilovers		448F/336R (L/L)*
    Omni-Power Sport Coilovers		539F/448R (L/L)*
    Omni-Power Drag Coilover		810F/810R (L/L)*
    Omni-Power 6-Way Damping Coilovers	539/448/336 (L)*
    Progress Coilovers			350F/250R (P/P)
    Progress Lowering Springs		320F/200R (P/P)
    SkunkWerks Coilovers (old)		400F/300R (L/L)
    Skunk2 Coilovers (new)			500F/400r (L/L)
    Sparco					needed
    Spoon Full Coilovers			300/240
    SSR Cup					392/280
    SSR S1					448/448
    Suspension Techniques			10-15% more then stock (P/P)
    Tanabe DF-210				10-15% more then stock
    Tanabe NF-210				5-10% more then stock
    Tein HT					1119F/448R (L/L)
    Tein HG					365F/129-196R (L/P)
    Tein SS					448F/224R
    Tein Flex				504F/280R
    Tein RA/RE/RS				783F/559R (L/L)
    Tein S. Tech				235F/140R
    Tokico Illumina Kit			250/123 (P/P)
    For 02-05 Civic Si (EP3)
    Code:
    Eibach Pro-Kit				15-20% stiffer then stock
    Eibach Sportlines			20-25% stiffer then stock
    H&R Sport				25-30% more then stock
    Omni-Power Street Coilovers		448F/336R (L/L)*
    Omni-Power Sport Coilovers		539F/448R (L/L)*
    Omni-Power 6-Way Damping Coilovers	539/448/336 (L)*
    Progress				280F/500R
    Sprint					20-25% more then stock
    Tein Flex				448F/559R
    Tein SS					336F/448R
    Tein S. Tech				157F/291R
    For 94-01 DC Integra
    Code:
    97, 00-01 ITR factory			250F/250R (L/P)
    GS-R factory				200F/95R (P/P)
    OEM 60x343mm				252F/140R (L/P)
    Comptech Sport				335F/210R (L/P)
    Eibach Pro Kit				288F/213R (P/P)
    Eibach Sport Line			325F/241R (P/P)
    Endless Zeal Function B6 Hard		672F/448R (L/L)
    Endless Zeal Function B6 Street		560F/336R (L/L)
    Ground Control Coilovers		380F/250R (L/L)*
    H&R OE Sport				302F/168R
    H&R Race				460F/350R (L/L)
    H&R Sport				276F/276R (L/P)
    HKS SF5					398F/291R (L/L)
    KW variant 1				needed (L/L)
    KW variant 2				needed (L/L)
    KW variant 3				needed (L/L)
    Mugen 5 Adjustment Kit			381F/252R (L/L)
    Neuspeed Race				455F/360R (L/L)
    Neuspeed Soft Sport			250F/185R (P/P)
    Neuspeed Sport				250F/185R (P/P)
    Omni-Power Adjustable Sleeve Coilover	448F/336R (L/L)*
    Omni-Power Sport Coilovers		539F/448R (L/L)*
    Omni-Power Street Coilovers		448F/336R (L/L)*
    Omni-Power Drag Coilover		810F/810R (L/L)*
    Omni-Power 6-Way Damping Coilovers	539/448/336 (L)*
    RS*R Race				279F/268R (L/L)
    RS*R SUS				242F/173R (P/P)
    SkunkWerks Coilovers (old)		500F/400R
    Skunk2 Coilovers (new)			500F/400R (L/L)
    Spoon Progressive			358F/303R (P/P)
    Spoon Stright Spring 60x200mm		448F/448R (L/L)
    Swift Sport Mach Luxury			336F/196R (L/L)
    Tanabe DF210				241F/201R
    Tanabe GF210				302F/235R
    Tanabe NF210				274F/201R
    Tein High Tech				296F/257R (P/P)
    Tein S-Tech				335F/274R (P/P)
    * = Can custom make coil-overs with superior spring rates (0.25lb/ft increases)
     
  2. Going-West

    Going-West Tree people on my radio Registered VIP Registered OG 5+ Year Member 10+ Year Member

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    what's the smell?

    smells.............sticky.

    good post jason :thumbs up
     
  3. io_303

    io_303 NIFOC Registered VIP Registered OG 5+ Year Member 10+ Year Member

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    Wow you an NOFX have given some good info lately....Good work
     
  4. Eran

    Eran It's on ass-backwards. Registered VIP Registered OG 5+ Year Member 10+ Year Member

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    thanks for the sticky :thumbs up
     
  5. JoeB

    JoeB Skunk2 racing Registered VIP 5+ Year Member 10+ Year Member

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    nice work compiling
     
  6. defvayne

    defvayne Set This World On Blaze!! Registered VIP 5+ Year Member 10+ Year Member

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    so what springs would be best for 96-00 hatchback since they are lighter in the rear?
     
  7. defvayne

    defvayne Set This World On Blaze!! Registered VIP 5+ Year Member 10+ Year Member

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    bump....need this answer quick.
     
  8. c_diddy

    c_diddy drove through a tree Registered VIP 5+ Year Member 10+ Year Member

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    i second that. that's some good stuff to know.
     
  9. CivicEX13

    CivicEX13 CC's Valve Cover Guy Registered VIP 5+ Year Member 10+ Year Member

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    good info man w00t!
     
  10. nighthawk

    nighthawk The One 5+ Year Member

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    great post. now I just need I little help with reading this =)
    Is it better to have P/P springs? What does this numbers actually mean? I guess the larger are numbers, the lower car is, right? And probably stiffer right?

    I would appreciate some assistance ;)
     
  11. Eran

    Eran It's on ass-backwards. Registered VIP Registered OG 5+ Year Member 10+ Year Member

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    None of the numbers up there have to do with ride height :lol:

    Here's how spring rates work:

    Say you have a front rate of 200lb/in. (ie, 200F/xxxR). That means that each front spring takes 200lbs of pressure to compress one inch. The higher your spring rate, the more force it takes to compress it, the stiffer your ride.

    Linear vs Progressive:

    Linear springs have the same rate from top to bottom. No matter where pressure is applied, it's going to take the same ammount of pressure to compress one inch. Progressive springs use "inactive" coils to have two completely separate spring rates. The bottom portion of the spring will take less pressure to compress, thus giving a softer, smoother ride, where the top portion will take more pressure to compress, thus improving handling in more agressive cornering.
     
  12. ALEXSAN

    ALEXSAN New Member 5+ Year Member

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    hi can you help? you have a list for honda civic eg 92-95 hatcback I HAVE A HONDA CIVIC SI HACTHBACK WITH 1600 DOHC ENGINE MODEL 1993 )AND I WANT TO BUY A LOWERING SPRING CODE 519-05-1480 DROP MY CAR 2.5" FRONT A 2.25" REAR

    I USE MY CAR FOR STREET NO ON RACE TRACK

    THEN.. MY CAR WITH YOUR PRODUCT WILL BE JUMPING WITH OEM SHOCKS?

    AND WOULD I NEED NEW SHOCKS?

    FOR ME IS IMPORTANT TO KNOW IF MY CAR WITH YOURS LOWERING SPRINGS WILL BE HAVE A COMFORT AND HANDLING ACCEPTABLE ON STREET
     
  13. NOFX

    NOFX I'm NOT eran! Registered VIP Registered OG 5+ Year Member 10+ Year Member

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    He's not selling these springs. Make your own thread and you're more likely to get good answers.
     
  14. BlackHopeDC5

    BlackHopeDC5 Is Black Again??? :shock: Registered VIP Registered OG 5+ Year Member 10+ Year Member

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    omg this is useful.... i never saw this before.. good s**t
     
  15. NOFX

    NOFX I'm NOT eran! Registered VIP Registered OG 5+ Year Member 10+ Year Member

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    Jason made lots of useful threads. =)
     
  16. Matt.

    Matt. Banned Registered VIP Registered OG 5+ Year Member

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    Indeed, I never know why he's banned quite a bit.
     
  17. NOFX

    NOFX I'm NOT eran! Registered VIP Registered OG 5+ Year Member 10+ Year Member

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    Well, you can still find him on H-T at least. :thumbs up That is... if you want to brave it. :roll: :lol:
     
  18. sneakerpimp120

    sneakerpimp120 New Member 5+ Year Member

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    so the higher the number stiffer they are ? or no
     
  19. sneakerpimp120

    sneakerpimp120 New Member 5+ Year Member

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    Tein S. Tech 235F/140R are they progressive or linear?
     
  20. 99ExDriver

    99ExDriver New Member Registered VIP 5+ Year Member

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    thank for the information, I was looking for eibach spring rates for weeks.
     


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