Leaderboard

Thank you Jon! Gosh so much misinformation out there. I was told the calipers were the same for all ZX, so this is really helpful. Attached is my spec line. As you can see, I’m stuck on the 252 vented fronts and a ZX caliper, but which ZX caliper is open (so definitely will be using the later year). for the rear, because OEM was drum the EP rules are a bit looser. We are allowed to swap out drums for disks, and the spec line (attached) doesn’t limit this ability. The rear rotor has to be smaller than OEM front (272mm), and we are allowed to use alluminum calipers. Therefore, what I pick for the rear just need to balance well with the 252 vented ZX fronts so the bias (Tilton mechanical screw, seperate masters) is not too-far too the front at the get-go. ideally a 2-piston willwood rear caliper and an OEM S130 rear disk would be ideal. A kit to get the caliper on would be helpful and keep me from wasting more time on fab.