How to install a 4-point harness?

[Friedl01]

Hey,

I`m currently thinking of installing a 4-point harness in my Alpine with the Sabelt "Bucket seats" (not the comfort one). I have seen that quite often in some posts and videos, but I really don`t know how to install the lap belt. (The shoulder straps are pretty easy and clear...)

I know that there are some CNC Parts from MP-Rezeau, but I really don´t think, that everybody is using those CNC parts when they install their 4-point harnesses...

I`m looking forward to your answers!

Cheers
Gottfried

[TimRV57]

I did use the MPR kit because of exactly that. It is a shame because the shoulder mounting points are easily usable without a kit.

At least the MPR kit is very neatly done, if expensive!

[fuzzy-si]

The shoulder straps just need some M10 eye bolts and screw into the factory captive nuts.

For the lap belts there are a couple of options.

Make an L shape bracket that can bolt to the seat runner (as pictured)

The MPR billet bracket.

Or a Schroth Harness End Fitting Kit that you can bolt to the floor through the existing frame bolts accessed from under the car.

[Captainian]

Has anyone fitted a 4-point harness on a comfort seat? I'm sick of sliding around on track days...

[johnnyreggae]

There was a suggestion about 18 months ago that base cars prior to then did not have a pre-tapped rear cockpit panel ready for a harness unlike GT and/or sport