Any one have any opinion or have used, PRIMARY DRIVE 520 ORM O-RING CHAIN.
Just curious, I have one on one of my bikes.


www.rockymountainatvmc.com/parts/primary...0-orm-o-ring-chain-p

I like o-ring / x-ring chains. I not familiar with the orm brand. The o-ring chain on my BMW has 13,000 miles and I rarely ever have to adjust tension. Same with the o-ring chain on my XT500. Unfortunately due to the limited clearance between the chain and rear shock springs on my RT2 and 250A I use standard non o-ring chains that aren't as wide as the o-ring chains.

I like the o-ring chains too, I was able to squeeze one onto the '72 CT2, barely, and it has a one tooth larger than stock counter sprocket. Not enough room on the '72 Suzuki TS185.

I love oring chains... no experience with that brand.

I use the DID VT2 series... quite a bit narrower than a standard oring chain so fits a lot of old models where a standard oring chain is too wide.

^This. I was going to post the same sentiment. O-ring chains can run into clearance issues because of their OA width. The DID VT2 'narrow" o-ring chain solves that. Pricey, but great chain.

I've never used a Primary Drive chain. For low cost standard roller I use DID.

Thanks guys for the replies,
actually its for my KDX so clearance wont be a problem. , a lot of guys on the KDX forums say they like and no issues. They also make Sprockets.