Review: SuperSprings Sumo Coil Springs, (Front Suspension) with Mini How-to - Second Generation Nissan Xterra Forums (2005+)
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post #1 of 19 (permalink) Old 06-06-2013, 11:27 AM Thread Starter
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Review: SuperSprings Sumo Coil Springs, (Front Suspension) with Mini How-to

Problem:
Find a solution to stiffen the Xterra’s front – improving ON-ROAD handing, cornering, bump absorption, sway, etc. If possible, retain stock off-road capabilities.

Background:
I (and many other members) find the Xterra’s suspension to be a bit soft. This is well documented for the rear leaf springs with multiple solutions (AALs, bump stops, air bags, etc). For the rear I personally added a Road Master Active suspension and found it helpful (my reviews of this product are on the site).

Stiffening the rear helped, but I still wanted to improve upon the X’s on-road capabilities without detracting much from its stock off-road capabilities. My X is a DD and sees 90% of its life on pavement with the remaining 10% towing and light off-roading to trail heads.

Researching, I stumbled across a company that makes a number of suspension solutions. The company is SuperSprings and based in CA. I found their SumoSpring product of particular interest.

(They also make a bumpstops and AALs. And could be a viable alternative to Timbrens, etc.)

Website: http://supersprings.com/coil_sumosprings_overview.asp

They did not have an Xterra listed, so I contacted the company and over the course of a few weeks I worked directly with them to take measurements and adapt one of their existing models to the Xterra.

Review / Verdict:
I worked with Mike at SuperSprings, who really was just an awesome guy and extremely helpful. He set me up with guidelines for taking measurements of the front coils (both under load and at full drop). From there he recommended product number CCS-1094 to start. A few days later it was at my house.

I had it easily installed over the weekend (more on that below) and took it for a 650+ mile round trip mini-vacation to Washington, D.C. Driving from CT to DC I was able to experience a number of on-road suspension scenarios. From highway cruising, to city driving, the Xterra went though high speed potholes, construction zones, speed bumps and terrible NYC / DC roads. With a high speed avoidance maneuver and a few hard braking sessions to add to the fun.

In the end I found that the SumoCoil springs were up to the task and made a noticeable difference. I find them to be an excellent value, especially for the price (retail $114.30). For those seeking to retain stock off-road capabilities and improve on-road handing these are excellent. They also do not lift the truck (a plus for me since city parking was barely tall enough for the X as is it). I found them to be a good alternative to the much more expensive stiffer coil options / shocks I was contemplating.

SumoCoils are progressive poly foam inserts put between the coils. They make for a more controlled suspension engagement. I found that the X was better at taking corners and absorbing road imperfections. I was worried (and willing to accept) that a stiffer front would lead to a harsher ride – but not with this product. The X is much smoother, with no sudden drop or jarrings over pot holes / speed bumps. The front end soaks things up quite well and handling is improved. By no means is the X a race car. It’s a bit more nimble - it's less floaty / flubbery. The suspension is no longer easily upset. Wind sway is also (slightly) reduced.

For what I wanted, my money was well spent on this product. I am a satisfied customer and would recommend them to others.

(P.S. they are also supposed to help with front end load. Mostly snow-plows – but I could see this being a possible help to those running front armor and not upgrading the front suspension.)

Product photos:



Mini how-to:

This video is great: http://www.etrailer.com/tv-install-s...-css-1145.aspx

1. Optional: Wash your X.


2. Jack up the front and remove the tires. Clean the coils


3. Slide the SumoCoils between the 3rd and 4th coil on the X and secure in place


4. Optional: Add stickers

Last edited by iamamused; 06-06-2013 at 03:04 PM. Reason: Updated correct retail price.
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post #2 of 19 (permalink) Old 06-06-2013, 11:29 AM Thread Starter
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Possible Group By

Also, if folks find that they want to give this a try - they said they would be open to a group by.

Let me know and I'll setup another thread to gauge interest.

These retail for $114.30- so it would be a bit off of this. Discount dependent on groupby size.

Last edited by iamamused; 06-06-2013 at 03:03 PM. Reason: Updated correct retail price.
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post #3 of 19 (permalink) Old 06-06-2013, 11:54 AM
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Awesome write up, thanks for going through the effort!
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post #4 of 19 (permalink) Old 06-06-2013, 01:04 PM
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I'm curious what that gray sleeve is on the bottom coil of your springs? I don't remember that on my factory springs when I removed them.
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post #5 of 19 (permalink) Old 06-06-2013, 02:15 PM Thread Starter
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Quote:
Originally Posted by brett View Post
I'm curious what that gray sleeve is on the bottom coil of your springs? I don't remember that on my factory springs when I removed them.
No clue. Came from the factory that way. My guess is its a guard / wrap for the bottom part of the coil.
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post #6 of 19 (permalink) Old 06-06-2013, 02:48 PM
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mine had it too. IIRC, it's to keep them from squeaking.
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post #7 of 19 (permalink) Old 06-06-2013, 10:42 PM
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I might be in for a GB on these in a few months (once I get my new bumper).
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post #8 of 19 (permalink) Old 06-06-2013, 11:05 PM
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Interesting. What exactly did you have to measure? I might be interested, but I have OME coilovers, don't know the difference between the OEM and OME springs.'

Also:
https://www.youtube.com/watch?v=wl8v...w&feature=plcp

Got a Fronty in there, and some wheeling (can't say how much is stock footage, but you can clearly see the springs at work). Seems like they're currently offering a $100 rebate on certain SumoSprings (the leaf pack type).

Good discovery!

Last edited by ThePlasticOne; 06-06-2013 at 11:23 PM.
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post #9 of 19 (permalink) Old 06-07-2013, 08:50 AM
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The gray piece on the bottom of the coils are isolators, to keep road noise down.
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post #10 of 19 (permalink) Old 06-07-2013, 09:04 AM Thread Starter
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Quote:
Originally Posted by ThePlasticOne View Post
Interesting. What exactly did you have to measure? I might be interested, but I have OME coilovers, don't know the difference between the OEM and OME springs.'

Also:
https://www.youtube.com/watch?v=wl8v...w&feature=plcp

Got a Fronty in there, and some wheeling (can't say how much is stock footage, but you can clearly see the springs at work). Seems like they're currently offering a $100 rebate on certain SumoSprings (the leaf pack type).

Good discovery!
Thanks! Yes, they have quite a few different products available. From leaf pack to bumpstops (which may be a good alternative to timbrens), to the coil inserts.

For measurements, they sent me over a coil measurement sheet.

The following measurements are requested, with 4 being the most important.
1. Coil count
2. diameter of coil
3. Gap between 3rd coil and gap between 4th coil (with tire on, level ground)
4. Gap between 3rd and 4th coil with front end jacked up, tire removed, at full drop.
5. Width of individual coils

I took the measurements on stock springs which is the same for all years and trims.

Terrance - If you want I could email you the measurement sheet in case you wanted to try them on your aftermarket coil setup.
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