I was lucky enough to find a pair of Koni red inserts for my 1979 Rx7. I have not been lucky enough to find rears to match.

The 79 Mustang is about the same weight as the Rx7 and the Konis for it (KONI-8040-1026 ) appears to be the right dimensions and have the right mounts (an eye at the bottom and a pin at the top).

Has anyone ever fit these to their Gen1 Rx7?

Herb

 

I've heard of folks using fox body mustang shocks before on our cars. I suspect it will work.

 

I have single adjustable Koni Sports on my race car and they work fine. Lots of racers use them especially the double adjustable model. 79-93 mustang rear shocks are what you need to look for. Mustang rear shocks get longer starting in 94

 

I've used the 79-93 single adjustables as well on my street car, work fine. I have a set of double adjustables ready to go if I ever get back to the '79.

 

Are the reds single or dual adjustable?

 

In my experience they are single adjustable and the adjustment affects rebound primarily. As a rule, single adjustable shocks usually only control rebound but I have found with Konis, KYBs and Illuminas compression dampening changes a little bit as rebound is adjusted.

I had a set of Red Konis on an 85 SVO Mustang (factory shocks on that car). The way you adjusted them was to unbolt them from the axle, compress them fully to engage the adjuster and then turn them to change rebound from soft to firm. Frankly it was a pain in the ***.

The yellow Sport Konis have an adjuster on top that you turn with a removable plastic ****. Similar to a Tokico Illumina except that they don't have 5 distinct settings. Very easy to adjust. Buy a set of these and paint them Koni red!

Other rear shock options from a Fox Mustang would include the Tokico Illumina, Tokico D Spec, KYB AGX (I have a set of these on a Fox Mustang - good shocks for the money) and QA1 shocks.

 

I used Fox body Bilstein shocks on my car. They mostly fit fine, but the lower eyelet was too wide, I had to machine 4mm off each side then they fit fine. I wish they were a little shorter to act as a travel limiter when I jack up the car, the front VW struts have little droop at all before the wheel comes off the ground, I may end up putting some limiter straps on the rear of my car.

 

Using the shocks to limit travel is not a good idea. It will jerk the shocks apart eventually. Limiting straps have been used by manufacturers and a lot of racers for years. I used the straps from one of the off-road specialty shops on my three link set up.

 

Good point I agree it is better to use limiter straps, I plan to get some for my car.

 

Received my 1979 mustang Koni rear shocks yesterday. Length extended is about an inch shorter than stock length. Compressed length almost identical. As stated by one of the respondents, I may need to file the length of the eyelet bushing a hair.

Can't wait to install them. All I need to do is sand the engine bay, prime and block, paint, re-install the gas tank, reinstall brake lines, etc, etc, etc.

Herb