Re: VR55 Found Home › Forum › Ask A Member › VR55 Found › Re: VR55 Found chris-pReplies: 2456Topics: 153 May 20, 2018 at 3:56 pm #76407 The big stamping on the rear of the crankcase is 23F96 Small stamping base port side is 04733 Stamping on the Rotary is 23D102