Since o-ring Chains are usually too wide for the stock chain guides on earlier Pentons and MC5's, has anyone had experience running a 520 X-Ring chain? I faintly remember someone mentioning they are slightly narrower than o-ring chains and what I have read is they are more resistant to dirt and debris. Mike
I used 520 o ring on my 74 jackpiner and 250 and a 530 o ring on my 73 jackpiner I just cut the chain guide, they all work great no problems
I kind of like the fact that they claim less horsepower loss compared to an o-ring chain, although on a 250 it doesn't really matter. Mike
Michael R. Winter
I enjoy rebuilding and appreciating Pentons!
1974 250 HS Pentons-1978-1979 MX-6 175 & 250 KTM's
1976-78 125-400 RM's & 79 PE250 Suzuki & 2012 DR650
2007 CR125R Honda
1977 MC250 Maico
Mike, I believe X ring is about half way between roller chain and Oring chain in thickness. Not 100% but memory from selling them at my shop recalls it that way. Definitely not as much of a horsepower soaker.
Larry P
Thanks. I'm building a 76 TS185 that I would like to try one out on first. Mike
Michael R. Winter
I enjoy rebuilding and appreciating Pentons!
1974 250 HS Pentons-1978-1979 MX-6 175 & 250 KTM's
1976-78 125-400 RM's & 79 PE250 Suzuki & 2012 DR650
2007 CR125R Honda
1977 MC250 Maico
What is "X-Ring chain, and why do they call it that? I don't think I have ever heard that term before.
Type at you later,
Dan McEntee
A sealed chain like an o-ring chain, but it is x shaped cross section or squared on the edges, so less drag, and supposedly better sealing. Do a search on the web for a pic. Mike
Michael R. Winter
I enjoy rebuilding and appreciating Pentons!
1974 250 HS Pentons-1978-1979 MX-6 175 & 250 KTM's
1976-78 125-400 RM's & 79 PE250 Suzuki & 2012 DR650
2007 CR125R Honda
1977 MC250 Maico
Most all the hot offroad guys in modern run them.
Larry P
DID 520 VT2 Narrow Enduro Racing X-Ring Chain. Carried at Rocky Mtn ATV and others.