BMW R100, with variant models designated by T, S, CS, , RS Classic, RT, RT Classic, TIC,TC, and is a BMW motorcycle series, using a two-cylinder four-stroke boxer engine of 980 cc capacity. Model production began in 1976, with a premature shutdown and subsequent restart in 1985, and final completion of the series in 1996. The last of the "airheads," this article also discusses the different /7 models of smaller displacements (R60, R75, R80).