Cometic, oil pump relief valve plug gasket - 54-E78 & L78-80 B.T. (NU) Top clamps The distance between the inside

The distance between the inside to inside of the axle plates is 9-5/16"

AVON TRLRD 120/90-17 64S TL M&S

Connects to the transmission 5/16" over flow oil hose to help prevent these nasty looking oil spots under your bike

Technischer Überwachungsverein (Technical Inspection Association

Cometic, oil pump relief valve plug gasket - 54-E78 & L78-80 B.T. (NU) Top clamps The distance between the inside1 used. Fiber. OEM replacement reference 26231 78. Note: Can also be used to use the brass washer (OEM 6581) as originally used on the earlier 54 E78 Big Twin models. Note: For the OEM style brass washer as used on 54 E78 models see MCS 514915.