What flywheel is this?

Hey guys,
I bought this flywheel on eBay a couple weeks ago, was listed as OEM DC2 flywheel which I knew it wasn't so I bought it (as it was priced as OEM flywheel!) but I don't know what it is. It looks like a RPC, but that is supposed to be 3.6 kg and this one is 4.2. Either way, I'm not too bothered looks like a quality piece of kit, just curious as to what it might be! Cheers!

What does the toda one look like?
Similar design.

Yeah I thought it might be that, but this has smaller holes. Looks exactly like RPC only weight doesn't match. But for 40 quid I can hardly complain lol

looks like F1 racing

Yep, well spotted! Read mixed reviews about F1 stuff (mainly clutches), but this one seems OK, the bearing is fine (that'd be the first thing I'd expect to fail if it wasn't balanced) so I'll give it a go!