From memory I've encounted 3 for usd's
- The old style gold caliper mounts to the apollo bikes , 04 - 05 thumpy's etc
- BSE styled caliped found common amongst all bse type bikes - pitpro etc
- Fastace caliper - also fits motovert conventional and I think Dnm?
There's a few out there , anything china bike there are many many variations.
The silver bse calipers use banshee pads where as the fastace calipers have a pad that slots into the caliper rather that pins that run through it. The gold has wing like pin mount patterns. I got all the EBC pad product codes for each caliper if your need them.
I think your long travel forks take the fastace ( black ) calipers?