Size Choosing FAQs
Q1. I am performing an installation on a small SUV And I Am Kind Of Confused With The Size Selection
Question. Hi RubberShox Customer Service, I am performing an installation on a small SUV and I am kind of confused with the size selection:
- For the front, I measured the (High Inner) spacing as 2.25”-2.5”. I picked size B+ but it was too small, so finally, I went with a size- A as the perfect match. However, the openings are almost touching together.
- For the rear, I measured 2.1” and the size B+ can fit it if the buffer was a bit looser on top guide channel.
Installed A
A: Thank you for choosing RubberShox. I have additional tips and information to help you complete a successful buffer installation for your SUV front and rear Coil Spring.
Instructions:
Jack up the car first. Once the coil spring tension is relaxed, then, you can determine your Coil Spring Gap (CSG#). The front and rear coil springs will need to be measured separately since the RubberShox size will typically be different between the front and rear tires.
In the case of this (2.25”-2.5”) measurement, it would be ideal to choose CSG# that is equal to or slightly larger than an H2 sized buffer so that optimal suspension enhancement is achieved. As a side-note, it would be very difficult, if not impossible to properly install an H1 sized buffer to the size measured here.
So, for the CSG# (2.25”-2.5”) measurement an H2 size is best. Since an H1 is significantly smaller than the measured CSG#, it will not fit properly.
Here is a trick:
To achieve both (CSG# close to H2, but still keep it easy to install in a tight spot, follow this example) ….
Ex. My car rear suspension CSG# is 0.85”, so I choose CSB-D, as H2 which is 0.8”, which should be perfect to my car, but it would be very hard to install with a smaller size as H1 is 1.81” too high to insert into my rear Coil Spring. Solution: I made H1 close to H2 by cutting inner rim of H1 (See Fig.1), so that Coil Spring can be easily inserted.
*In the example shown, 3 CSB buffers have been added to both Rear Coil Springs. This ensures that a much smoother ride is possible even on a bumpy road.
Instructions:
Jack up the car first. Once the coil spring tension is relaxed, then, you can determine your Coil Spring Gap (CSG#). The front and rear coil springs will need to be measured separately since the RubberShox size will typically be different between the front and rear tires.
In the case of this (2.25”-2.5”) measurement, it would be ideal to choose CSG# that is equal to or slightly larger than an H2 sized buffer so that optimal suspension enhancement is achieved. As a side-note, it would be very difficult, if not impossible to properly install an H1 sized buffer to the size measured here.
So, for the CSG# (2.25”-2.5”) measurement an H2 size is best. Since an H1 is significantly smaller than the measured CSG#, it will not fit properly.
Here is a trick:
To achieve both (CSG# close to H2, but still keep it easy to install in a tight spot, follow this example) ….
Ex. My car rear suspension CSG# is 0.85”, so I choose CSB-D, as H2 which is 0.8”, which should be perfect to my car, but it would be very hard to install with a smaller size as H1 is 1.81” too high to insert into my rear Coil Spring. Solution: I made H1 close to H2 by cutting inner rim of H1 (See Fig.1), so that Coil Spring can be easily inserted.
*In the example shown, 3 CSB buffers have been added to both Rear Coil Springs. This ensures that a much smoother ride is possible even on a bumpy road.
Q2. This is the spring under normal load. When spring is no longer under load, should I measure between the tighter wound coils or the looser? I need a .5 inch raise of the fender-to-wheel gap due to rubbing under moderate/heavy cornering, and/or encountering bumps while turning.
A. Below is the link steps for you to choose size.
https://www.rubbershox.com/how-to-choose-your-buffer-duratpetm-series.html
please jack up car first, and measure the gap to determine the size.
If you can send over your measure distance, we can help you determine size.
Also, there are normal (softer) and Pro (harder) two type, for better lift ground clearance, choose DuraTPE pro series.
You can ref. to www.rubbershox.com under support tab for more detail.
https://www.rubbershox.com/how-to-choose-your-buffer-duratpetm-series.html
please jack up car first, and measure the gap to determine the size.
If you can send over your measure distance, we can help you determine size.
Also, there are normal (softer) and Pro (harder) two type, for better lift ground clearance, choose DuraTPE pro series.
You can ref. to www.rubbershox.com under support tab for more detail.
Customer response
Thanks guys, I ordered the (regular) D and E sizes for below and above the tightly wound coils to experiment with. Mainly because it's cheaper, but also because I want to minimize the lift. These are lowering springs and just not stiff enough, so your product seems perfect!
I'm probably going to start with both D and E on at the same time, then go from there. If it's still too soft I'll at least have a better idea of sizing to make a final decision with your PRO line of products!
Thanks guys, I ordered the (regular) D and E sizes for below and above the tightly wound coils to experiment with. Mainly because it's cheaper, but also because I want to minimize the lift. These are lowering springs and just not stiff enough, so your product seems perfect!
I'm probably going to start with both D and E on at the same time, then go from there. If it's still too soft I'll at least have a better idea of sizing to make a final decision with your PRO line of products!
Q3. It was too small to install into my car. I found the gap in lower side of spring is wider while the gap close to the top is narrower
A. of the coil springs design will be have larger gap in the bottom and smaller on top. You can installed the buffer from the bottom and slid up as much as you can after you jacked up your vehicle. This will provide a firm fit of the buffer with your spring and give you maximum support and lift. If the installation is still difficult, you can cut off the top (or both top and bottom)of inner rings to make installation easier. However, you should always use the zip ties provide to tight up your buffer to your springs
Q4. I would like to increase spring stiffness to only reduce body roll and lesson upward tire travel without raising overall height on my lowering springs. Would I measure CSG with car raised without spring tension, or for my case with lowering springs under weight of car?
A. You will still need to jack up your car to measure the gap of your coil spring (D). If you want minimum lift of your vehicle. You can choose the buffers based on your measurement.
If D close to H1 (H1> D > H2) you will get minimum lift but will still get support on your suspension system.
If D close to H2 (H1 > D > H2) You will get maximum lift and support.
We will suggest CSB series for your application.
If D close to H1 (H1> D > H2) you will get minimum lift but will still get support on your suspension system.
If D close to H2 (H1 > D > H2) You will get maximum lift and support.
We will suggest CSB series for your application.
Q5. Diameter of my spring is too big will the buffer fit
A. If your spring is a little big you may trim the inner ring edge to allow it to fit. you may attempt to trim the bottom firs if not success then trim the top inner trim , doing this we recommend adding 4 zip ties to secure it ( we provide two per buffer).
Added Note: If the spring is about 0.75 (3/4inch), we recommend rubber blocks as alternative.
Added Note: If the spring is about 0.75 (3/4inch), we recommend rubber blocks as alternative.
Q6. The space between the coil and the shock is too narrow it will not fit.
A. Please measure the space between the shock and the coil it less than 0.25 inch it will not fit with the shock dust cover. Please readjust buffer different location or install a rubber block.
Q7. What size suit my car?
Thanks for contacting to RubberShox.
We do not have your vehicles in our database. But we can assist in two way
There are four different types hardness below base on your vehicle and application. Higher weight support may create stiffer right but increase more ground clearance
Thanks again for choosing RubberShox. We take the Hit for You
RubberShox Team
We do not have your vehicles in our database. But we can assist in two way
- Please download measuring- tool from Amazon or RubberShox website, print and cut the measuring-tool template to measure your car coil spring (make sure jack up car first and measure the gap to determine the size.)
- We can also help you determine size if you send over your coil spring gap distance (make sure jack up car and measure the center spring larger gap zone)
There are four different types hardness below base on your vehicle and application. Higher weight support may create stiffer right but increase more ground clearance
- CSB Super: 6000Lbs GW and 7000Lbs combined with Rubber Block Booster
- CSB Pro: 5500Lbs GW and 6500Lbs combined with Rubber Block Booster
- CSBS Plus: 5000Lbs GW and 6000Lbs combined with Rubber Block Booster
- CSBS: 4500Lbs GW and 5500Lbs combined with Rubber Block Booster.
Thanks again for choosing RubberShox. We take the Hit for You
RubberShox Team
