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Quick Review of Duff’s MS2020 Eibach shocks

MarsChariot

Contributor
Planetary Offroader
Joined
Oct 12, 2004
Messages
2,605
Loc.
Albuquerque, New Mexico
This is a short review of Duffs MS2020 shocks that I just installed on the red 71 a week ago on the 49th year of ownership and after dissatisfaction with the Bilstein shocks that I had been running the past decade. Now the handling is so good that for the first time in years I found myself driving the Bronco like a regular sporty vehicle, getting into the throttle, and tossing it around just for fun. Just night and day. A game changer. The real deal and live up to the hype. They are slightly more expensive than Bilsteins but well worth the difference in cost.

I have had Bilsteins since the major off the frame rebuild a decade ago and frankly they made the Bronco nearly undrivable due to very poor re-bound control. With the Bilsteins I felt that the slightest bump in the road caused too much of a boat-like pitch and roll. When I let out the clutch, the front end would go up no matter how gently I accelerated. Letting my foot off the gas to change gears caused the front end to pitch down. Dropping off the end of the driveway while turning caused the front to bounce back and forth at least twice before it settled down. Going through curves was scary, especially if the surface was uneven. The handling overall was just not safe in my opinion. And this was my second set of Bilsteins. I even installed Duffs Hellwig antiroll bar set up to get rid of the roll when driving through curves. That helped the rolling a lot, but the pitch was still too much. My first set of Bilsteins was exactly the same but I thought at the time that there must be something defective with them so I gave them another try with a new set since everyone seems think the Bilstein shocks are so great.

The MS2020s have eliminated all that and transformed the handling back to the way I recall Broncos handled. Bumps are soft but the rebound is now once and done as it should be. No bobbing, pitching, and wallowing, just solid handling. Meanwhile they are like normal shocks on long wavelength bumps but soft on short wavelength bumps, cracks in the road, and rough surfaces. The response over small bumps and cracks in the pavement are just as soft as the Bilsteins and that gives a much smoother, less bone-jarring ride. Combined with the anti-roll bars the handling is now close to perfect.

A couple of before and after pictures during installation.
 

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mimmonen

Contributor
New Member
Joined
Mar 15, 2014
Messages
44
I sure hope they are as good as your experience as I am using them on my build.
 

JeepGuy

Contributor
Bronco Guru
Joined
Aug 24, 2006
Messages
1,521
Have them on mine as well. 3 1/2 lift with extended radius arms up front for a longer travel suspension. I was thinking I was going to need to add a sway bar for drivability. NOPE. These shocks perform very well so far.
 

toddz69

Sponsor/Vendor
Bronco Guru
Joined
Nov 28, 2001
Messages
11,211
That's great to hear, Mars! I know you have been unhappy with the Bilsteins for a long time and I'm happy to hear you have found something that works well. The bushings look to be very high quality in the pics as well.

Todd Z.
 

Hondo57

New Member
Joined
Aug 19, 2026
Messages
1
I am having some difficulty getting shock measurements to Duff with my Mac. Maybe some one can tell me if I can use those Ms2020 shocks? There is a slight lift on my 77 Bronco as I have f150 springs up front. The shock measurements if I follow Duff guide are 17" up front and 17.75" in back. That is at rest. If I measure frame to axle it is 8" front, 7" back. I noticed on the shock page it says Duff does not do OEM standard size shocks? Thanks for any help.
 
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MarsChariot

MarsChariot

Contributor
Planetary Offroader
Joined
Oct 12, 2004
Messages
2,605
Loc.
Albuquerque, New Mexico
From your frame to axle measurements it looks like you have about 1 inch of lift front and back. Their shortest Eibach is really designed for a 2 to 2.5 inch lift. A lift less than this might risk bottom the shock on compression.

If you look at the chart on the bottom of the shock size selection page you can determine what size you would need from a little arithmetic. You want a shock that gives equal extension and compression distance. In other words, you want your measurement sitting on the ground to be the compressed length of the shock plus half the total travel or thereabouts. The calculation to find that is: (compressed length)+ (1/2 x total travel). This where your stud to eye and eye to eye length should be at rest on the ground.

For the front the only stud to eye shock is the 8208: 14.125 compressed + 1/2x 7.975 total travel = 18.06. This means that your relaxed front length (stud to eye) of 17 inches gives you only 1 inch of compression, which is kind of short and risks bottoming.

For the rear, the 8209 is the shortest and gives at relaxed length sitting on the ground of 19.8. That gives you 2.1 inches of compression.

You might fill out their form and see what they say, but I suspect you might need to go to the 2 inch lift, maybe not.
 
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