Hello,

Looking to install some lowering springs on my car along with KYB shocks/struts.

These are the lowering springs I wish to buy, wondering if anyone has had experience with this brand. Will be installed on a 1979 RX-7. Anything else I should consider before buying parts?

https://motonsuspensionusa.com/produ...986-mazda-rx-7

 

🤷‍♂️never seen those before ....

If you want to lower it lookit King Springs in Australia...they got factory height low and super low coil springs....

Or go Racing Beat or get coilovers....

Good luck....

 

I also take some progressive Eibach 35 mm lowering springs with TÜV certificated. The rear KYB Sport are to long, so you can loose your spring when you didn't drive like an old wife from Pennsylvania 😅🤣😂

 

Hey, I'm married to an old wife from Pennsylvania

 

GSL-SE near Harrisburg? Tell her about the 5 speed gearbox.🤪 i was follow her in the second gear😅🤣😂

 

Same here, never heard those before. I have racing beat springs on my Rx7 and after about 4 years on them I've still got a sizeable gap in the rear, though the front you can barely squeeze a finger in. Front was always a good bit lower than the back though for whatever reason.

Looking back at my older photos of it after I put them on, they've stayed about the same even after over 20,000 miles. Odds are if you still have original springs they are pretty tired, I wouldn't expect RB springs to lower it very much if at all. That being said they are very good springs and have served me well in autocross and daily driving!

 

Racing Beat springs age well. I've had the same set on 2 different 1st Gens and they have accumulated over 200k miles and still going strong. As long as theyre protected from corrosion, they'll last a LONG time. I also autocrossed the 1st car they were on, so it's not like they head an easy life. These cars just don't weigh all that much,

 

I hope the quality today will be the same.

 

I think I am going to continue forward with the AST lowering springs, and then we can all find out how they are. I'll be the test dummy for you all, probably continue to update this thread when I begin the swap.

 

If they don't work out for you I have a new set of RB springs on the shelf. Will be posting an add soon.

 

Good luck....and keep us posted...

 

I agree with the others , I would recommend the RB springs . I have used them on a few cars but I usually cut the rear spring down about 1/2 - 3/4 coil for the correct ride height . The front spring rate might be a bit firm
for the street if you run low profile tires and a big sway bar .

 

Hey, OP - don't forget to cut down your rear bump stops when you install the lowered springs, or you'll be bottoming out on them on even moderate bumps. When you have the springs out, look up into where the spring perch is on the body of the car, and you'll see a 14mm bolt hrough the middle of the bump stop. Pull it out, and cut off 1" roughly. This will account for the reduced spring height and give you full travel.

If you don't do this, you'll get a rebound sensation when the springs compress and prematurely hit the bump stops. You may also find that on hard cornering, you'll be bottomed out on the outboard side which dramatically reduces traction on uneven surfaces.

 

how are the springs holding up?