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  1. Sledding - General Discussion
    Found this 635cc, engine case on ebay, listed as a 617??? The guy had it advertized as a 1992 617, but the case looked like a newer 670 case. I verified with him, by photo, and e-mail, on what the DATA PLATE said, (76mm x 70mm) 635.3cc, and not (76mm x 68mm) 617cc. Has the top hole on the back...
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