[cdn280]

Need a set for my 2006 300EC. Was going with a stock 13T front (since they are rare to find anybody else making them) and a 50T rear, Moose or... (not Ironman, out of my price league). Do any chains NOT fit re: o ring/z ring, fit on sprocket, plate thickness clearance etc ? I've got a Regina Gold Z ring on a 640 and its very nice, but very beefy. Haven't had to adjust it yet in 1000kms. And I think I've read a few posts saying Regina wasn't that great??
Looking more for longevity than weight and effect on max hp.