6 point harness
I sourced a set of harnesses from Schroth via HMS Motorsports for considerably less than that. Schroth is the OEM for Radical's harness, so the only difference is the name sewn on the label. They even come in 4 different colors!
https://www.hmsmotorsport.com/products/Flexi
The worst part about swapping the harness is that you have to remove the seat to adjust the sub belts.
That link did not work for me; is it this one? https://www.hmsmotorsport.com/item/flexi-2x2
Also, what year were these certified for?
On my SR3 RSX, my belts look more like this: https://www.hmsmotorsport.com/item/sfi-16.5-profi-ii (lower part of the shoulder harnesses are 3 inch wide, all other straps are 2 inches wide)
I believe this is the same belt I used for my formula car. One benefit is the side belts can be reversed and you can tighten the belt by pulling it towards you instead of away. I found this to be easier in making it really snug.
It looks like Wisko Racing (Alton VA Radical dealer and shop) offer a better deal on new harnesses.
@charleyhradicalsportscarregistry-com
715 per seat. I studied the HMS Motorsport options for Schroth SFI 16.5 Profi II with lap belts that both pull down and double shoulder option is 815 per seat.
What about these for ~$550?
https://www.pegasusautoracing.com/productdetails.asp?RecID=28227
Different belt which might be fine but I don't have the experience to know.
I'm sure the belt from Pegasus would work, but I know from experience that having the buckle attached to the subs is a pain in the ... uh, neck.
Much more comfortable is the hybrid style sub that anchor at the side of the turnbuckle on the lap belt.
That's my $.02, anyway. 🙂