CRX HF-SI build- suspension

HF Rear Brakes

Si Rear Brakes:

These images offer a look at the differences in the rear braking system setup between the CRX HF and Si.  First off the trailing arms, the part that supports all of the bearing housing and the area that the brakes bolt to are in fact different.  The holes around the si “axle” hold the brake “plate” on, then the caliper engulfs that and the brake system is complete.  Also, in doing this swap, be aware that the brake lines will be vastly different.  I think the parking brake is shorter on the HF also.

Just for reference know that the lower control arms are also different.  The parts are interchange able(you can fit SI lca’s on the HF) but the HF lca’s dont have the hole for the rear sway arm so if you are switching everything from an SI to HF the sway bar also wont bolt up to the body.  There are the holes for it, but they are only holes, they ARE NOT THREADED!!!!(the reason mine still isnt on)

As a small note on the front brakes, i switched to the SI calipers on the front of my CRX, the SI calipers are a bit bigger and will help considering the majority of of stopping power is coming from the from due to weight and motion shift when braking.  They will bolt directly up and everything from an SI will fit nicely.  I highly recommend doing this if you ever end up taking your car in for a brake job after this point, make sure to tell them you have SI brakes up from and not HF, it could cause a major headache.