1EA NEW OLDER 85cc BIG BORE KIT RING SET 1.43MM THICK COMP "377" RINGS (95R)
REF 13011-377-003
 
ALSO FITS STOCK CB400F ENGINES FROM THE MID 70'S
 
IF YOU HAVE A 85CC KIT FOR USE WITH THE 81 AND OLDER 50 OR 70 ENGINES, (it may have) THE THICK RING SET,(mostly sold in 2005)