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KYB SB108 - Strut Boot , Black

4.2 out of 5 stars 446
$14.75 with 24 percent savings
List Price: $19.32

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Purchase options and add-ons

  • Durable rubber strut boot protects strut shaft from leak-causing dirt and debris
  • Foam bumper prevents strut from bottoming out and protects components
  • Matches OE quality to extend strut life by keeping out contaminants
  • Covers entire strut shaft to shield upper seal and bushing
› See more product details

Frequently bought together

KYB SB108 - Strut Boot , Black
$14.06
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KYB SB104 - Strut Boot
$16.55
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In Stock
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KYB SB102 - Strut Boot
$13.68
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About Us

At KYB, you’ll find a group of passionate people who believe in developing the safe products. Good enough does not cut it for products that affect vehicle control, stability and stopping distance. Transporting your family, hauling heavy loads or spirited driving, our products are built correctly with a clear, considered purpose. Our mission embraces education and safety to shops, parts stores and consumers; we believe that knowledge allows for better decisions and better performing vehicles.

KYB is well known as an Original Equipment supplier to new vehicle manufacturers around the globe. We use the same materials, techniques and facilities to build our Aftermarket products. We take pride in offering products that restore your vehicle to how it performed when it was new. In short, we create products that are the correct solution for the application, and we use our products on our own cars and trucks.

Product Description

KYB Strut Boot Kits keep your struts protected from dirt, dust, sand, salt and other road debris. These harmful elements cause abrasive wear to the polished shaft, upper seal & bushing. KYB Strut Boot Kits prevent these contaminants from entering the strut by covering the entire strut shaft in a highly durable plastic bellows. This can easily extend the life of the strut. The KYB Strut Boot Kit includes a poly foam travel-limiting bumper. It’s designed to protect the strut from bottoming out and protects other components from extreme movement damage.

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KYB SB108 - Strut Boot , Black

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What's in the box

  • Boots

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    Customer reviews

    4.2 out of 5 stars
    4.2 out of 5
    446 global ratings

    Customers say

    Customers like the performance and value of the strut boot. They mention that it works well and is good value for money. They appreciate the appearance. That said, opinions are mixed on fit, quality, and material.

    AI-generated from the text of customer reviews

    19 customers mention14 positive5 negative

    Customers like the performance of the strut boot. For example, they mention it works well, has no problems after many months of use, and is a great product.

    "Worked well for my 2000 sentra but I found the bottom of the strut bellow to be to narrow to fit over the body of the strut...." Read more

    "...It was easy and worked perfectly." Read more

    "...fitment indicated but mechanic indicated that part was not completely useable for application-only used the foam-ish bumper piece and not the strut..." Read more

    "...No modifications to the SB108 kit are required. So far it is working great...." Read more

    13 customers mention10 positive3 negative

    Customers like the value of the boot. They say it's a great buy and good value for money.

    "...The boot kits are a must when installing new shocks. The price here is right and is about 1/2 of the quotes I got from local installers." Read more

    "Great Product @ Great Price! However come to find out bellow is not necessary or applicable for rear strut for 2001 Honda Civic, too long!..." Read more

    "...The bump stop slips into a groove in the bellow. This is a great price for 11 bucks. I used these for the rear of my 240sx s13...." Read more

    "This is a very cheaply made product. the boot part is thin hard plastic, not rubber like the Monroe set I now have for the other two struts...." Read more

    6 customers mention6 positive0 negative

    Customers are satisfied with the appearance of the boot. They mention that it looks good and the bump stops hole design is good.

    "...The bump stops hole design is good, vents nicely against the strut shaft. I guess time will tell on the quality of the bump stops." Read more

    "...All in all, product feels, looks good, shipped fast (~5$ parcel post)..." Read more

    "Plastic boots, I prefer rubbers instead. Looks OK though, not sure how long will it last, but something tells me not very long...." Read more

    "Good fit and look nice, like better then the pen design. Had to use a heat gun to get around the strut" Read more

    5 customers mention5 positive0 negative

    Customers are satisfied with the bump stop of the boot. They mention that it's a hard foam bump stop, like super dense styrofoam, with a smooth molded finish. Some say that the material seems to be softer than the original, but the old ones may have hardened.

    "...Bumpstop like super super dense styrofoam with smooth(er) molded finish; 48mm length; says "NAPD PB2108 USA BASF 3"; can just barely deform it when..." Read more

    "...The bump stop material seems to be softer than the original, but the old ones may have hardened due to age." Read more

    "Bumps stops seem fine on my 1992 Miata - I think they were a good choice...." Read more

    "...It includes that plastic cover, and a hard foam bump stop...." Read more

    70 customers mention25 positive45 negative

    Customers are mixed about the fit of the boot. Some mention that it fits well and looks nice, while others say that it doesn't fit. Some say that the boot is very tight but manages to work it on.

    "Very tight but managed to work it on . You need to heat and stretch it . To get it to fit over the strut." Read more

    "...half of the cost of the other aftermarket products and the fit with these is better." Read more

    "...I am in agreement.The lower end of the boot is so small that it took quite a bit of effort to get it over the piston top cover (silver part)..." Read more

    "...issue is it seems to be a friction mount and there is nothing keeping the bumpstop in place like my last set, I see other people had a washer it..." Read more

    38 customers mention25 positive13 negative

    Customers are mixed about the quality of the boot. Some mention that it's well-made, durable, and improves ride quality. However, others say that it is fragile and made of cheap plastic.

    "...But they are good quality and not cheap plastic" Read more

    "...to the original bumpstops, I have noticed substantially improved ride quality when the suspension bottoms out with these bumpstops installed...." Read more

    "...The bump stopper is made out of a soft mushy poly foam that seems fragile and likely to disintegrate quicker than the old and worn OEM bump stops..." Read more

    "Very good product." Read more

    12 customers mention4 positive8 negative

    Customers are mixed about the material. Some mention the bump stops are not hard rubber, but give a little before. The boot itself has a stiff, almost plastic feel, while others say they are made of soft plastic and won't hold up.

    "...Since this boot is fairly rigid, made of some kind of polyethylene or something similar, it will maintain its shape and keep rubbing...." Read more

    "...Also, the material of these bellows is much stiffer than the OEM and hopefully more durable...." Read more

    "...First it is plastic and not rubber like the stock ones I have...." Read more

    "...The bump stopper is made out of a soft mushy poly foam that seems fragile and likely to disintegrate quicker than the old and worn OEM bump stops..." Read more

    Good quality but front touches springs.
    4 Stars
    Good quality but front touches springs.
    There are for a civic CRX si setup springs might be thicker and maybe that’s why the bellows rub. But they are good quality and not cheap plastic
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    Top reviews from the United States

    V. L. Judge
    5.0 out of 5 stars Good Value
    Reviewed in the United States on March 28, 2024
    Verified Purchase
    GPS-GREAT PRODUCT AND SERVICE
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    Butter Angel
    5.0 out of 5 stars Fits rear of G35 coupe 2005
    Reviewed in the United States on July 10, 2022
    Verified Purchase
    Very tight but managed to work it on . You need to heat and stretch it . To get it to fit over the strut.
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    Amazon Customer
    4.0 out of 5 stars Good quality but front touches springs.
    Reviewed in the United States on March 11, 2024
    Verified Purchase
    There are for a civic CRX si setup springs might be thicker and maybe that’s why the bellows rub. But they are good quality and not cheap plastic
    Customer image
    Amazon Customer
    4.0 out of 5 stars Good quality but front touches springs.
    Reviewed in the United States on March 11, 2024
    There are for a civic CRX si setup springs might be thicker and maybe that’s why the bellows rub. But they are good quality and not cheap plastic
    Images in this review
    Customer image
    Customer image
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    Matt from CO
    5.0 out of 5 stars Perfect for my NA miata
    Reviewed in the United States on September 13, 2011
    Verified Purchase
    If you know NA miata suspensions (91-97) you know that the OEM suspension uses a hard rubber bumpstop and a rubber bellows that is one piece. The rubber bellows is always shredded and the bumpstop gets hard with age. On later miata's Mazda changed the bumpstops to be a softer material and there are a number of aftermarket companies that produce these softer bumpstops as a retrofit for the older miatas. This KYB bumpstop and bellows combo is made of a similar material to those aftermarket or later mazda parts. Also, the material of these bellows is much stiffer than the OEM and hopefully more durable. When using aftermarket bumpstops on a miata, you also need to use aftermarket bellows and those were not designed together and usually require zip tying them to the shock for a less than perfect looking install. These KYB parts were designed together and the bumpstop is held captive by the bellows for a clean install. I installed these on KYB AGX shocks and the fit was snug, but perfect. Compared to the original bumpstops, I have noticed substantially improved ride quality when the suspension bottoms out with these bumpstops installed. For $50, you get improved bumpstops and bellows, that fit and work great. That's about half of the cost of the other aftermarket products and the fit with these is better.
    22 people found this helpful
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    Tom Coleman
    5.0 out of 5 stars Shock parts
    Reviewed in the United States on January 12, 2024
    Verified Purchase
    Very good product.
    Helpful
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    Tidbart
    1.0 out of 5 stars May not work for your application, regarless of what KYB's website say.
    Reviewed in the United States on March 31, 2014
    Verified Purchase
    I purchased two of these to install on a 2004 Infiniti i35. They went with the KYB 341341 struts for the rear of the car per the KYB website catalog. I installed them and all I get is rubbing noises from the boot rubbing the tip of the strut.

    I saw that another reviewer made a comment about these boots not being compatible with KYB Excel struts. I am in agreement.
    The lower end of the boot is so small that it took quite a bit of effort to get it over the piston top cover (silver part) and onto the piston tube. Per KYB, you are supposed to tie wrap the bottom of the boot to the piston body. It won't matter. As the strut actuates, the silver portion rubs the inside of the corrugated portion of the boot as there is not enough clearance between the boot and the silver cap. You can tie wrap it or not, it won't matter. Since this boot is fairly rigid, made of some kind of polyethylene or something similar, it will maintain its shape and keep rubbing.

    Unfortunately, when my new boots (Febest rubber) arrive, I will to take apart the car and struts for the third time to replace them.

    I was looking now to purchase for an upcoming job, I would definitely not use these boots with Excel-G struts. In all fairness to KYB, these boots may work well in other applications, just not mine.
    One person found this helpful
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    Str8Jacket
    5.0 out of 5 stars Great product
    Reviewed in the United States on October 18, 2013
    Verified Purchase
    Fit snug over my 2000 Honda Civic Struts and does not rub against springs. My previous springs did not have any strut boots and now that it does I hope that it will help extend the life of the struts by keeping it cleaner, bump stops fit snug as well on the OEM struts and the replacement as well. KYB is a great product; I will definitely be ordering a set of these on every car of mine
    One person found this helpful
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    Dragon
    2.0 out of 5 stars Far inferior to OEM boots on 2004 Prius
    Reviewed in the United States on January 6, 2014
    Verified Purchase
    The OEM boot on the 2004 Prius struts is solid plastic that’s large enough to slide down over the body of the shock so the plastic never has to bend. SB108 is a softish bellows with a bottom that is too small to fit over the shock body. That means the bellows must compress whenever the car bounces and I can’t imagine it’s going to last as long as the hard plastic OEM cover (which lasted over 10 years so far). One reviewer said it broke after one winter.

    I don’t think SB108 provides as much protection against dirt because the bottom of the bellows leaves a space where water/dirt can land on the top of the shock and get pulled into the shock when it compresses. The OEM hard plastic extends down about an inch past the top of the shock so it will shed water around the shock body instead of between the body and piston. As you compress SB108, the base of it slides off to one side of the shock leaving the other side completely unprotected. I'm using SB108 with a new KYB strut that the KYB web site says is compatible with SB108 so this is apparently intended behavior.

    I wasted a lot of time with SB108 because the 2-paragraph "manual" didn’t show how to install it or mention what to do with the washer it comes with. The manual shows only how to insert a white foamish bumper into a collar at one end of the black bellows. It turns out that you're then supposed to force the white bumper all the way past the collar on the silver piston rod which takes a fair amount of force. Finally, the washer is meant to sit above the collar to form a platform for whatever is above the collar to sit on (some more rubber parts in my case). After I got all that worked out, I found that the bellows wouldn't fit through the bottom of the strut spring so I had to force the white bumper past the collar again, which is even harder going the other way.

    In the end I decided to just keep using the OEM boot due to its far-superior design.
    2 people found this helpful
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    Top reviews from other countries

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    5.0 out of 5 stars funciona para lo que se solicitó
    Reviewed in Mexico on September 27, 2021
    Verified Purchase
    funciona para lo que se le solicitó
    Report
    claude brassard
    5.0 out of 5 stars fait tres bien
    Reviewed in Canada on March 6, 2020
    Verified Purchase
    et facile d instalation
    Report
    lelio.delia
    5.0 out of 5 stars Good service and competitive price
    Reviewed in Canada on November 17, 2019
    Verified Purchase
    Very good product
    Report
    Troy Amezcua
    5.0 out of 5 stars kyb
    Reviewed in Mexico on April 8, 2019
    Verified Purchase
    excelente
    One person found this helpful
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    Juan jj
    1.0 out of 5 stars Descripción y aplicación erronea
    Reviewed in Mexico on November 7, 2022
    Verified Purchase
    No me sirve no es para lo que lo requeria
    Report