BMW R18 — the full side profile shows the exposed frame tubes and wide boxer cylinders
The 1802cc Big Boxer — largest displacement boxer BMW has built
Chrome exhaust headers — factory standard, not aftermarket
1923 BMW R32 — the R18's direct ancestor at 100 years
BMW R90S (1973) — the cruiser's closest performance ancestor
BMW R18 Transcontinental — five variants, one engine