Cusco Power Brace rear member bolts
 

Hi all ! I just got a 2nd hand set of Cusco rear braces for cheap in Japan :

CUSCO Power Brace Rear Member Side (965 492 RS)

https://d1jzipsk7hwhx6.cloudfront.ne...68806/2095.JPG

https://www.xd-auto.com/image/xd-aut...-2084x2084.jpg

Unfortunately, it didn't come with the mounting bolts. Before I start the installation, can anyone tell me if they can be mounted with the stock bolts or if they need longer ones ?

Many thanks for your help

Was it supposed to come with mounting bolts? I recall mine did not.

Yes, the original kit normally includes 2 bolts for the LCA side. The other side attaches directly with the stock existing bolt.

Apparently it needs a slightly longer bolt on the LCA side as the cylinder shaped end of the brace it a few millimetres thick. I think I can get away with it by using the leftover OEM LCA to knuckle bolts that I no longer use since I have camber adjustable SPC LCAs with eccentrics. They are slightly longer than the OEM LCA to subframe bolts so it should work in case the regular ones are too short.

You're right - was checking thru photos and there were M12 bolts provided. The instructions state an M12 80mm partially threaded hex bolt with washers, so that's easy to find.

Any idea what the thread pitch and grade of the bolts are? Asked Cusco and they told me to buy new ones from them...

Not sure about the size of the bolts, but I would wonder how much Cusco would charge for those 2....?

Found the answer to my own question - they are 1.25mm in 10.9 grade.

Coming back with the solution after installing the braces a few days ago, for those who will come after. Everything worked fine with the OEM LCA to knuckle bolts. They are a little bit shorter than 80mm but were ok.

I can't emphasize enough how much of an improvement those braces bring on the rear axle. More direct transmission of the torque to the road even from low rev, better curve exit stability and a global more solid behavior on bumps. For the price of them, that's 10/10 for me.

I used to have them on, they made the rear feel much more unified; one of the best Unfortunately I had to take them off as I got the MCA traction mod which occupied the trailing arm mount; it would not fit.

However I've seen similar braces which mount onto the lower arm similar to the Cusco, but instead mounts onto the rear subframe on the other end. Pretty cheap as one of the companies manufacturing these bars is where I live, but not sure if it will have the same effect.