IMR22C
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Strut bump stops and dust boots
G'day all,
I've got my strut housings about to get powdercoated ready for my Koni with Eibach upgrade.
I'm wondering whether anyone has used bump stops or dust boots from other Toyota models?
I figure trying to use parts from a Camry or Corolla would be easier.
Thanks.
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Reddtarga
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Re: Strut bump stops and dust boots
2015/06/11 16:00:41
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To have the right suspension travel, it's important to get ones the right bump thickness/depth.
Early genuine sw20 bumpstops have a deeper bump thickness than the later ones.
Later (92+) SW20 genuine ones are 35 mm bump thickness depth front, and 45 mm rear.
Eibach Pro- Kits give a similar ride height to the 92+ springs so the later bumpstops should be the ones to use.
Twos'rus have KYB ones that should fit, but I think they only supply the same thickness for F/R
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IMR22C
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Re: Strut bump stops and dust boots
2015/06/11 23:58:07
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Good information there.
I looked up some on RockAuto, I think they're the same KYB kit as the ones on Twosrus.
They had multiple kits from different brands on RockAuto so I might do a bit more searching.
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SW20R.
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Re: Strut bump stops and dust boots
2015/10/30 00:15:01
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Just continuing on this thread, has anyone bought KYB strut boots and bump stops? What is the product code/part number? I need to replace my boots and stops both front and rear and I'm having trouble finding which ones are appropriate. Tworus have the KYB SB103, but I am unsure as to whether it's for both front and rear. According to this site, yes: http://www.autopartswarehouse.com/shop_parts/shock_and_strut_boot/toyota/mr2.html But I'd rather have somebody who has dealt with this first hand. I've also noted that the Monroe 63620 also fits? Confused.
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Reddtarga
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Re: Strut bump stops and dust boots
2015/10/30 08:32:41
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Some time ago I got the 2 piece KYB ones from Twos'r'us, and they supplied the same for front and rear.
No probs fitting, however I needed to shorten the skirt for the fronts about a couple of inches otherwise they would have squashed.
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SW20R.
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Re: Strut bump stops and dust boots
2015/10/30 09:58:54
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So how did you shorten them? Did you cut along the ridges of the boot itself?
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Carmikey
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Re: Strut bump stops and dust boots
2015/10/30 10:11:58
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I used & can confirm the Monroe 63620 & 63619 strut boots fits a treat. I have used them numerous times, no cutting etc required. PM if you need more details.
post edited by Carmikey - 2015/10/30 10:15:20
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SW20R.
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Re: Strut bump stops and dust boots
2015/10/30 18:43:24
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Are the different part numbers for the Monroe boots for the front and rear? I'm assuming the 63620 is for the front and the 63619 is for the rear?
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Carmikey
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Re: Strut bump stops and dust boots
2015/10/31 08:53:51
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SW20R.
Are the different part numbers for the Monroe boots for the front and rear? I'm assuming the 63620 is for the front and the 63619 is for the rear?
No. Just run 19's all rounder. This is what they look like. 
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IMR22C
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Re: Strut bump stops and dust boots
2015/10/31 10:54:24
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Awesome, I still haven't bought mine yet.
This saves me just taking the gamble.
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Reddtarga
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Re: Strut bump stops and dust boots
2015/11/02 13:25:39
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SW20R.
So how did you shorten them? Did you cut along the ridges of the boot itself?
Yes! I cut along the inner edge of the fold. It is quite easy to do if you use a Stanley knife.
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whitemr2gt
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Re: Strut bump stops and dust boots
2016/08/29 13:31:06
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I have some new Koni yellows for my SW20 getting shipped to me at the moment, so I'm looking at ordering new OEM strut boots for front and rear and I want to make sure the fitment is ok.
Does anyone know if the Koni shock absorber shaft/rod diameter is the same as the Toyota OEM ones?
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DamMR2T
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Re: Strut bump stops and dust boots
2016/08/30 00:01:05
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I'm not 100% sure, but I just fitted Koni inserts and used KYB bump and boot for the rear (as bump is 45mm) and bought Monroe 63619 for the fronts which I cut the bump down to 35mm. The Monroe boot is more of a rubber(which comes with zip ties), whereas the KYB boot is more of a plastic and will just slip over gland nut. The thing I did note is the thread on the Koni is different to standard, as I couldn't reuse my front camber tops with them.
post edited by DamMR2T - 2016/08/30 00:06:29
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P E T E
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Re: Strut bump stops and dust boots
2016/08/30 09:27:36
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whitemr2gt - yes, they are the same diameter and fit perfectly. I just replaced my boots (With attached bump stops) with genuine toyota ones and am running Koni yellow struts. Check the parts catalogue, but you may want to replace the foam like washer as well at this point. I found mine was totally disintegrated when I pulled it all apart. Also check the strut tops to see if they need replacement.
If its a 92+ MR2, reverse the front strut tops when you re-install to gain extra castor. For memory the little arrow on the strut top faces to the rear of the car for the extra castor.
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Reddtarga
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Re: Strut bump stops and dust boots
2016/08/30 10:52:02
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P E T E
If its a 92+ MR2, reverse the front strut tops when you re-install to gain extra castor. For memory the little arrow on the strut top faces to the rear of the car for the extra castor.
It's actually the early model pre '92 strut tops that have offset centers (4 mm) and the the scalloped side normally faces to the rear of the car. If you reverse them (scalloped side to the front) you will gain an extra 1 degree of caster, and it wont affect front toe adjustment. By doing this on my '90 model I could get up to 5 degrees caster total with the caster adjustment maxed out, but IMO makes the steering too heavy for normal driving.
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