Thread: Which lowering springs to get in 2021?

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  1. #1 Which lowering springs to get in 2021? 
    SE Level Member dirtyape's Avatar
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    Hi everyone,

    I have been going through old threads regarding my question, alot of whats in them are old stuff that isn't available anymore. I don't see any talk of zzp springs.
    I have 97 gtp, put the RAT suspension kit on in 2000. It used eibach springs, i know they were prone to pogo. Lately i am noticing alot of pogo and am thinking 21yr old eibachs, yeah they are probably shot.
    I am looking at the zzp lowering springs. I think they lower the same as eibachs did 2in front/1.5 rear? They claim to eliminate pogo. Not looking for super stiff, really just want pogo to go away and keep roughly the same ride height.
    Should i go zzp and be happy? Which others would you recommend?

    Thanks
    Kevin
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  2. #2 Re: Which lowering springs to get in 2021? 
    GXP Level Member The Guz's Avatar
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    Quote Originally Posted by dirtyape View Post
    Hi everyone,

    I have been going through old threads regarding my question, alot of whats in them are old stuff that isn't available anymore. I don't see any talk of zzp springs.
    I have 97 gtp, put the RAT suspension kit on in 2000. It used eibach springs, i know they were prone to pogo. Lately i am noticing alot of pogo and am thinking 21yr old eibachs, yeah they are probably shot.
    I am looking at the zzp lowering springs. I think they lower the same as eibachs did 2in front/1.5 rear? They claim to eliminate pogo. Not looking for super stiff, really just want pogo to go away and keep roughly the same ride height.
    Should i go zzp and be happy? Which others would you recommend?

    Thanks
    Kevin
    How low do you want to go? ZZP just released their new coil overs.

    With that said vogtlands offered the same drop as the GMPP lowering springs. The ride was comparable to the GMPP lowering kit when the vogtlands were paired with the AGX struts.
    1999 GP GT 18" Boss 353 Concave|SLP CAI|Borla Cat Back|Plog|HV3|HV TB|ER Rockers|Custom Retrofit Projectors|GMPP Lowering|GMPP Handling|MPD F1|Full Diode Dynamic LEDs
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  3. #3 Re: Which lowering springs to get in 2021? 
    SE Level Member dirtyape's Avatar
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    Not looking to go any lower what i have is fine. with 18x8 in rims i do rub when i have people in the backseat over bumps. really just looking for same drop the eibachs give me but no pogo.
    went to vogtlands website, no grand prix stuff from them. so they are no go. does anyone have experience with the zzp ones? Not looking to spend the money on coilovers. I put agx ajdustables on front about 5yrs ago, i have the adj konis that were installed in 2000 still on the rear. I think they are ok, but if im gonna do springs, might as well do agx adj and new bearing plates in the rear.
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  4. #4 Re: Which lowering springs to get in 2021? 
    GXP Level Member The Guz's Avatar
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    1999 GP GT 18" Boss 353 Concave|SLP CAI|Borla Cat Back|Plog|HV3|HV TB|ER Rockers|Custom Retrofit Projectors|GMPP Lowering|GMPP Handling|MPD F1|Full Diode Dynamic LEDs
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  5. #5 Re: Which lowering springs to get in 2021? 
    SE Level Member dirtyape's Avatar
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    Thanks alot for finding these.
    Going agx all around with the vogtlands, is that the consensus best way to go without doing coilovers? Would i need anti-pogo washers with these or are the springs all i would need do you think?
    I think the vogtlands lower less than the eibachs i have. Thinking about new wheels, i have 8in now the ones im looking at are 8.5. little more room would help with any rubbing issues, right?
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  6. #6 Re: Which lowering springs to get in 2021? 
    SE Level Member dirtyape's Avatar
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    bought the vogtlands, thanks for your help
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  7. #7 Re: Which lowering springs to get in 2021? 
    GXP Level Member The Guz's Avatar
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    Anti-pogo washers wouldn't hurt. Enjoy the ride. It looks good with the wheel size you are running.
    1999 GP GT 18" Boss 353 Concave|SLP CAI|Borla Cat Back|Plog|HV3|HV TB|ER Rockers|Custom Retrofit Projectors|GMPP Lowering|GMPP Handling|MPD F1|Full Diode Dynamic LEDs
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  8. #8 Re: Which lowering springs to get in 2021? 
    SE Level Member dirtyape's Avatar
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    Should i get the zzp anti pogo washers? I see gm made some back in the day too. Thanks again for all your help
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  9. #9 Re: Which lowering springs to get in 2021? 
    GrandPrix Junkie
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    IIRC, anti-pogo washers are just front subframe washers, unless something has changed over the years.
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  10. #10 Re: Which lowering springs to get in 2021? 
    SE Level Member dirtyape's Avatar
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    Just found out from vogtland they discontinued their springs back in 2020. No one has them anymore. Took vivid a week to figure that out and tell me they couldn't ship my order. I contacted vogtland myself and found out in a day.
    So back to zzp ones or ? this site has several different kits, b&g and dropzone. Anyone have any experience with any of these?

    Pontiac Grand Prix Lowering Springs & Lowering Kits - SlickCar.com
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  11. #11 Re: Which lowering springs to get in 2021? 
    GXP Level Member The Guz's Avatar
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    I hated the ride quality of b&gs. The back end also sat lower than the front.
    1999 GP GT 18" Boss 353 Concave|SLP CAI|Borla Cat Back|Plog|HV3|HV TB|ER Rockers|Custom Retrofit Projectors|GMPP Lowering|GMPP Handling|MPD F1|Full Diode Dynamic LEDs
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  12. #12 Re: Which lowering springs to get in 2021? 
    SE Level Member dirtyape's Avatar
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    I have the zzp's on the way. I am hoping they aren't made by B&G, lol. I doubt zzp would sell springs that give the gp ass sag. That was a thing people were trying to get rid of back when i did my mods.
    I asked who makes them for him. He has alot of good reviews on his site, hopefully they aren't paid for like amazon ones are.
    Bummer i was a little too late for the vogtlands.
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  13. #13 Re: Which lowering springs to get in 2021? 
    SE Level Member dirtyape's Avatar
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    Returning the zzp springs, gonna go with their new coilovers when they get back in stock.
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