Sachs Cylinder with Reed Valve

[Rob Thatcher]

Hi all,
I was browsing and saw this cylinder with a cut out for a reed valve.  What reed system goes with this?  any ideas?
http://www.ebay.com/itm/201024821054?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2648#ht_63wt_1106

[firstturn]

Rob,
  I haven't looked real close, but I think that we were using Gem reed system that also was made for a CR250 (that also had to be modified.  Nice thing about this cylinder is if the owner measured it correctly it is on standard bore.  Hope this helps.

Ron Carbaugh